How do you solve # \frac { 5} { 1} = \frac { x } { 4}#?
1 Answer
The variable
Explanation:
There are two ways to solve this:
First method: You can find a common multiplier or divider between the denominators, then apply that to the numerators. In this example, the denominator in the known fraction is 1, and can be multiplied by 4 to yield the denominator of the unknown fraction, which is 4. We can also use the multiplier of 4 in the numerator of the known fraction to calculate the numerator of the unknown fraction. Multiplying 5 by 4 gives you 20, which is the answer.
Second method: You can "cross multiply" by multiplying the numerator of either fraction to the denominator of the other fraction, then setting the products equal to each other. For example, 5 multiplied by 4 gives you 20.