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 4 cups of flour make 16 muffins, how many cups are needed for 24 muffins?

Back

6 cups of flour are needed for 24 muffins.

Front

What is the formula for finding the unit rate?

Back

The unit rate is found by dividing the quantity by the number of units, expressed as 'quantity per unit'.

Front

If a train travels 500 miles in 10 hours, how far will it travel in 15 hours?

Back

750 miles.

Front

What is the relationship between the number of presents wrapped and the tape used?

Back

The relationship is a direct proportion; more tape means more presents can be wrapped.

Front

If 3 cups of cheese make 6 pizzas, how much cheese is needed for 18 pizzas?

Back

9 cups of cheese are needed for 18 pizzas.

Front

What is a direct proportion?

Back

A direct proportion is when two quantities increase or decrease at the same rate.

Front

If 2 cups of lemon juice make 16 cups of lemonade, how much is needed for 32 cups?

Back

4 cups of lemon juice are needed for 32 cups of lemonade.

Front

How do you find the missing value in a proportion?

Back

You can find the missing value by cross-multiplying and solving for the unknown.