Checking for Proportions
Learning Objective
I can determine if two ratios form a proportion.
Key Concepts
A proportion is formed by equal or equivalent ratios, meaning they represent the same comparison and relationship.
To determine if two ratios form a proportion using equivalent fractions, first write the ratios in fractional form, then find the least common multiple between the bottom terms.
If the equivalent ratios have the same value, then the original ratios are proportional; if the equivalent ratios are different, the original ratios are not proportional.
Practice Questions
This lesson includes 3 practice questions to reinforce learning.
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1. Rewrite the ratios 3:4 and 9:12 in fractional form. Then, determine if these ratios form a proportion. Explain your answer.
2. Determine if the ratios 4 to 6 and 6 to 9 form a proportion. Show your work by finding equivalent fractions.
3. Which of the following pairs of ratios forms a proportion?
Educational Video
How to Determine if Two Ratios Form a Proportion Using Equivalent Fractions | Math with Mr. J
Math with Mr. J