To convert pounds (lbs) to kilograms (kg), you can use the following step-by-step instructions:

Step 1: Understand the conversion factor

1 lb is equal to approximately 0.45359237 kg. This is the conversion factor we will use to convert pounds to kilograms.

Step 2: Set up the conversion equation

To convert 4 lbs to kg, we can set up the equation as follows:

4 lbs * (0.45359237 kg/1 lb)

Step 3: Cancel out the units

In the equation, the unit “lbs” appears in both the numerator and denominator. This allows us to cancel out the unit and only keep the desired unit “kg”.

Step 4: Perform the calculation

Now, we can multiply the numerical values:

4 * 0.45359237 = 1.81436948

Step 5: Round the result

Since weight is typically rounded to a certain number of decimal places, we can round the result to an appropriate number. In this case, let’s round to two decimal places.

1.81436948 kg rounded to two decimal places is approximately 1.81 kg.

Therefore, 4 lbs is approximately equal to 1.81 kg.