| ( | 3689 | − | x | ) | ÷ | x | = | 27 200 |
| Multiply both sides of the equation by: | x |
| ( | 3689 | − | x | ) | = | 27 200 | x |
| 3689 | − | x | = | 27 200 | x |
| - | x | − | 27 200 | x | = | - | 3689 |
| - | 227 200 | x | = | - | 3689 |
| 3689 | = | 227 200 | x |
227 200 | x | = | 3689 |
| x | = | 3689 | ÷ | 227 200 |
| = | 3689 | × | 200 227 |
| x | = | 737800 227 |
| x | = | 3250.220264 |