2.18 is what percent of 3900 - 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 3900 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 3900, so we can write it down as 100%=3900.
4. We know, that x% equals 2.18 of the output value, so we can write it down as x%=2.18.
5. Now we have two simple equations:
1) 100%=3900
2) x%=2.18
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%=3900/2.18
6. Now we just have to solve the simple equation, and we will get the solution we are looking for.

7. Solution for 2.18 is what percent of 3900

100%/x%=3900/2.18
(100/x)*x=(3900/2.18)*x       - we multiply both sides of the equation by x
100=1788.9908256881*x       - we divide both sides of the equation by (1788.9908256881) to get x
100/1788.9908256881=x
0.055897435897436=x
x=0.055897435897436

now we have:
2.18 is 0.055897435897436% of 3900