To solve problems that involve proportional relationships in algebra, follow these simple steps:
Find the Variables: Figure out which amounts are related to each other.
Set Up the Ratio: Write the relationship as a fraction, like this: ( \frac{y}{x} ).
Cross Multiply: If you have two fractions, you can use cross multiplication. For example, if you have ( \frac{a}{b} = \frac{c}{d} ), then you can write it as ( a \cdot d = b \cdot c ).
Solve for the Unknown: Work to get the variable by itself so you can find its value.
Just plug in the numbers, and you'll get your answer!
To solve problems that involve proportional relationships in algebra, follow these simple steps:
Find the Variables: Figure out which amounts are related to each other.
Set Up the Ratio: Write the relationship as a fraction, like this: ( \frac{y}{x} ).
Cross Multiply: If you have two fractions, you can use cross multiplication. For example, if you have ( \frac{a}{b} = \frac{c}{d} ), then you can write it as ( a \cdot d = b \cdot c ).
Solve for the Unknown: Work to get the variable by itself so you can find its value.
Just plug in the numbers, and you'll get your answer!