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 set the products equal to each other.

Front

If 1 bunch of grapes costs $2, how many bunches can you buy for $16?

Back

8 bunches.

Front

If a 12-ounce bottle of shampoo lasts 16 weeks, how long will an 18-ounce bottle last?

Back

24 weeks.

Front

What is the formula for finding a missing value in a proportion?

Back

If a/b = c/d, then ad = bc.

Front

What does it mean if two ratios form a proportion?

Back

It means that the two ratios are equivalent.

Front

Danielle used 8 cm of tape for 4 presents. How many presents can she wrap with 30 cm of tape?

Back

15 presents.

Front

What is the relationship between ratios and proportions?

Back

Ratios compare two quantities, while proportions show that two ratios are equal.

Front

How can you check if two ratios form a proportion?

Back

Cross-multiply and see if the products are equal.

Front

What is an example of a real-life proportion problem?

Back

If 3 apples cost $1.50, how much do 12 apples cost?