Proportions and Proportion Word Problems

Front

What is a proportion?

Back

A proportion is an equation that states that two ratios are equal.

Front

How do you solve a proportion?

Back

To solve a proportion, cross-multiply the two ratios and then solve for the unknown variable.

Front

If 4 shirts cost $36, what is the cost of 1 shirt?

Back

$9.00

Front

If 8 quizzes are taken in 2 weeks, how many quizzes are taken in 1 week?

Back

4 quizzes.

Front

What is the unit rate?

Back

The unit rate is a comparison of any two units, expressed as a quantity of one unit.

Front

If Sasha jars 25 liters of jam in 5 days, how much jam does she jar per day?

Back

5 liters per day.

Front

What is the formula for finding the total cost based on unit price?

Back

Total Cost = Unit Price × Quantity.

Front

If Jasmine bought 32 kiwi for $16, what is the cost of 1 kiwi?

Back

$0.50 per kiwi.

Front

How do you set up a proportion for a word problem?

Back

Identify the two ratios involved and set them equal to each other.

Front

If Keith bought 4 shirts for $36, how much would 7 shirts cost?

Back

$63.00.