428.3 is what percent of 2172 - 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 2172 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 2172, so we can write it down as 100%=2172.
4. We know, that x% equals 428.3 of the output value, so we can write it down as x%=428.3.
5. Now we have two simple equations:
1) 100%=2172
2) x%=428.3
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%=2172/428.3
6. Now we just have to solve the simple equation, and we will get the solution we are looking for.

7. Solution for 428.3 is what percent of 2172

100%/x%=2172/428.3
(100/x)*x=(2172/428.3)*x       - we multiply both sides of the equation by x
100=5.0712117674527*x       - we divide both sides of the equation by (5.0712117674527) to get x
100/5.0712117674527=x
19.719152854512=x
x=19.719152854512

now we have:
428.3 is 19.719152854512% of 2172