To convert kilometers to miles, you can use the conversion factor that 1 kilometer is equal to 0.621371 miles. Here are the step-by-step instructions to convert 4 kilometers to miles:

Step 1: Write down the given value.

4 kilometers

Step 2: Set up the conversion factor.

1 kilometer = 0.621371 miles

Step 3: Multiply the given value by the conversion factor.

4 kilometers * 0.621371 miles/kilometer

Step 4: Perform the multiplication.

4 * 0.621371 = 2.485484 miles

Step 5: Round the result to an appropriate number of decimal places.

Since the conversion factor is given to six decimal places, it is reasonable to round the result to four decimal places.

Step 6: Write down the final answer.

4 kilometers is approximately equal to 2.4855 miles.

Therefore, 4 kilometers is approximately equal to 2.4855 miles.