To convert a decimal number to a fraction we can use the following procedure:
Write the decimal divided by 1. in this case we wull have:
![(0.004)/(1)](https://img.qammunity.org/2023/formulas/physics/college/ryx781b8iczaotupibfxepbd95c198nmqg.png)
Then we multiply the numerator and denominator by 10 for every number after the decimal point, in this case we will have:
![(0.004)/(1)\cdot(10)/(10)\cdot(10)/(10)\cdot(10)/(10)](https://img.qammunity.org/2023/formulas/physics/college/ib24dcly85j8to1g40vvi59mmsuwx50cp8.png)
Now we simplify the fraction:
![\begin{gathered} (0.004)/(1)\cdot(10)/(10)\cdot(10)/(10)\cdot(10)/(10)=(4)/(1000) \\ =(2)/(500) \\ =(1)/(250) \end{gathered}](https://img.qammunity.org/2023/formulas/physics/college/49jh7cna8w743zdecwqb8q4iv932n55jvz.png)
Therefore the number in fraction form would be:
![(1)/(250)](https://img.qammunity.org/2023/formulas/physics/college/f3xk6hacz9a8r1xys6zx7mez19bdifplgj.png)