0.91 is what percent of 3.91 - 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 3.91 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 3.91, so we can write it down as 100%=3.91.
4. We know, that x% equals 0.91 of the output value, so we can write it down as x%=0.91.
5. Now we have two simple equations:
1) 100%=3.91
2) x%=0.91
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%=3.91/0.91
6. Now we just have to solve the simple equation, and we will get the solution we are looking for.

7. Solution for 0.91 is what percent of 3.91

100%/x%=3.91/0.91
(100/x)*x=(3.91/0.91)*x       - we multiply both sides of the equation by x
100=4.2967032967033*x       - we divide both sides of the equation by (4.2967032967033) to get x
100/4.2967032967033=x
23.273657289003=x
x=23.273657289003

now we have:
0.91 is 23.273657289003% of 3.91