ACT SAT Prep How to determine the the missing value by setting up two proportions

The video tutorial explains how to solve a problem involving soda sizes using ratios. It starts by establishing the ratios between large, medium, and small sodas. The tutorial then demonstrates how to convert large sodas to medium and subsequently medium to small using cross multiplication. The final solution shows that eight large sodas are equivalent to eighteen small sodas.

What is the ratio of large sodas to medium sodas as given in the problem?

• 3 large sodas to 2 medium sodas

• 2 large sodas to 3 medium sodas

• 1 large soda to 2 medium sodas

• 2 large sodas to 1 medium soda

How many medium sodas are equivalent to eight large sodas?

• 12 medium sodas

• 10 medium sodas

• 14 medium sodas

• 16 medium sodas

What mathematical method is used to convert the number of large sodas to medium sodas?

• Cross multiplication

• Division

• Subtraction

• Addition

How many small sodas are equivalent to twelve medium sodas?

• 18 small sodas

• 17 small sodas

• 16 small sodas

• 15 small sodas

Why is cross multiplication used in this problem?

• To subtract values

• To divide numbers

• To solve proportions

• To add fractions