Proportion Flashcard

Front

What is a proportion?

Back

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

Front

What does it mean for two fractions to be equivalent?

Back

Two fractions are equivalent if they represent the same value or proportion, even if they have different numerators and denominators.

Front

How can you determine if two fractions are equivalent?

Back

You can determine if two fractions are equivalent by cross-multiplying and checking if the products are equal.

Front

What is the cross-multiplication method?

Back

The cross-multiplication method involves multiplying the numerator of one fraction by the denominator of the other fraction to check for equality.

Front

If 2/3 = x/9, how do you find x?

Back

To find x, cross-multiply: 2 * 9 = 3 * x, which gives x = 6.

Front

What is the missing numerator in the proportion 2/3 = ?/9?

Back

The missing numerator is 6, so 2/3 = 6/9.

Front

Which of the following is NOT equivalent to 3:5? 15:25, 9:15, 21:28, 30:50

Back

21:28 is NOT equivalent to 3:5.

Front

How do you solve for a variable in a proportion?

Back

To solve for a variable in a proportion, set up the equation and use cross-multiplication to isolate the variable.

Front

What is the value of c in the proportion 3/4 = c/8?

Back

The value of c is 6.

Front

What is the relationship between ratios and proportions?

Back

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