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### Course: 6th grade (Illustrative Mathematics)>Unit 2

Lesson 5: Lesson 5: Defining equivalent ratios

# Equivalent ratios

One way to identify equivalent ratios is to determine if you can multiply or divide the corresponding parts of the ratio by the same amount. To do this, look at the two ratios and see if there is a common factor that you can use to scale one ratio to the other. If you can scale one ratio to the other by multiplying or dividing every part of the ratio by the same number, then the two ratios are equivalent.

## Want to join the conversation?

• Is finding equivalent ratios basically finding equivalent fractions?
• yes, you can even write ratios as fraction: like 2/3 = 2:3
• Guys, I really need help. I'm not sure how to label this sort of problem, but I think it could be called 'estimating the ratio?' I'm trying to average 76/23. The answer is 4/1. But what process do I use (or way of thinking) in order to average 76/23 out? I never know whether to average to the nearest 10th, 5th, or what. Please let me know. (If this question has been posted in the wrong place, give me a heads up.) Thanks.
• for this you would probably round to the nearest 10th making the ratio 80/20. Then, you would divide by 20: 80 divided by 20 = 4 and 20 divided by 20 = 1
• So do you always multiply by the same number to figure out the ratio?
• Yes, you would need to multiply both sides of the ratio by the same number, for it to be equivalent
• do you all ways have to multiply by 2 ?
• No, it can be times 6 or divide by 7.It depends on the problem.
• the questions i have to do are so much harder than the ones he shows!
• Same here!
• Please stop adding the copy and paste posts. It is distracting!
• why do we have to make math more complicated? all you need to know is the basics, STOP MAKING IT MORE COMPLICATED JUST KEEP IT HOW IT WAS BEFORE