Proportions Study Page
Use the menu below to learn, practice and master this skill.
We have a pair of **extensions for you to try today!
First, you can use your knowledge of proportions to "extrapolate" data over large populations.
Then, learn to use Microsoft Excel to solve proportions (and cheat on tonight's homework).
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Click this link to return to the Ratios Studies Page.
A proportion
is an equation that shows two equal ratios.
Proportions work just like equivalent fractions.
To check for equivalence you
cross multiply!
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To find a missing value in a proportion, use the “Stoney Method”
Cross multiply what you can and divide by the remaining number.
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n/4 = 40/32
n = 4 * 40
÷ 32
n = 160
÷ 32
n = 5
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Warm Ups - Get Started with a vocabulary matching practice and quick review.
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then improve!
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