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What is a Ratio in Math? Understand Ratio & Proportion - [6-3-1]

Math and Science

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In this lesson, you will learn what a ratio is and why we use ratios in math. You will also learn how to represent a ratio as a fraction and also how to write a ratio in colon notation. A ratio is a comparison between two numbers. A proportion is when two ratios are equal to one another. For example, if we have a room with 10 boys and 5 girls, we might write the ratio of boys to girls as 10:5, or as a fraction, 10/5. We can then simplify this ratio just like we simplify any fraction down to the simplest ratio, 2/1 in this case. This ratio indicates that in this room there are 2 boys for every 1 girl. We use ratios in all math subject areas to solve a wide variety of problems.

20 Comments

@DekuBakugou-l1v 3 years ago

thx so so so much my little cousin now understands it:yougotthis::hand-purple-blue-peace::face-purple-wide-eyes:

@almarubio1664 4 years ago

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@HishamMusa-f4d 3 years ago

If I have a question

@barackbryan365 2 years ago

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@farxiyohirsi4725 3 years ago

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@blessing23466 2 years ago

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@mantwagermina8930 4 years ago

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@elsasuarez7786 4 years ago

I was failing my math and then this guy helped me, thank you! 😊☺️

@barackbryan365 2 years ago

All the years of going to school to learn ratio I never understood but now i understand because you break it down so good and explain it very well. God bless you.

@mostest 2 years ago

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@AgnesTaremwa 1 month ago

Wow, you are so good at Math . May God give you eternal blessings for giving us knowledge.

@JuniasLute 2 months ago

I don't know ratios.And knows I understand ❤

@BoetLekese 3 years ago (edited)

You sir are the best! Thank you for the crystal clear explanations sir! You've corrected my intuition for ratios and proportions in this series.

@aaliyahd6644 2 years ago

There are actually three ways to write it. The first way is the fraction, the second is the colon, and the last is using the word "to". Using the word "to" is like using the colon. An example is
6 and five written as a fraction, but then if you wanted to use the word "to" you simply put 6 to 5. Hope this helps!!

@chowngorsoo5018 3 months ago

Very good explanation, you are a very good math teacher

@CathyMk-x4r 2 years ago

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@MUHAMMADALI-xp7sr 3 years ago

Thanks I learn it very well

@RuthShalyCherian 1 year ago

U helped me the day before my exam

@fantasankoh1616 2 years ago

There are also ratio problems that are given in word problem asking to give the ratio of an unknown item, giving the number for one of the items & also the total for both items.