638.57 is what percent of 5500 - step by step solution

To get the solution, we are looking for, we need to point out what we know.

1. We assume, that the number 5500 is 100% - because it's the output value of the task.
2. We assume, that x is the value we are looking for.
3. If 100% equals 5500, so we can write it down as 100%=5500.
4. We know, that x% equals 638.57 of the output value, so we can write it down as x%=638.57.
5. Now we have two simple equations:
1) 100%=5500
2) x%=638.57
where left sides of both of them have the same units, and both right sides have the same units, so we can do something like that:
100%/x%=5500/638.57
6. Now we just have to solve the simple equation, and we will get the solution we are looking for.

7. Solution for 638.57 is what percent of 5500

100%/x%=5500/638.57
(100/x)*x=(5500/638.57)*x       - we multiply both sides of the equation by x
100=8.6129946599433*x       - we divide both sides of the equation by (8.6129946599433) to get x
100/8.6129946599433=x
11.610363636364=x
x=11.610363636364

now we have:
638.57 is 11.610363636364% of 5500