To convert 10 inches to centimeters, you will need to use the conversion ratio of 1 inch = 2.54 centimeters. This means that for every 1 inch, there are 2.54 centimeters.

Step 1: Write down the given value

First, write down the given value, in this case, it is 10 inches.

Step 2: Set up a proportion

To convert inches to centimeters, we will need to set up a proportion using the given conversion ratio. The proportion will look like this:

1 inch / 2.54 centimeters = 10 inches / x centimeters

Step 3: Cross multiply

Cross multiply by multiplying 1 by x and 2.54 by 10.

2.54x = 1 * 10

2.54x = 10

Step 4: Solve for x

To solve for x, divide both sides of the equation by 2.54.

2.54x / 2.54 = 10 / 2.54

x = 3.93700787

Step 5: Write the final answer

The final answer is 3.93700787 centimeters. However, since we typically round centimeters to the nearest tenth, the final answer would be 3.9 centimeters.

Therefore, 10 inches is equivalent to 3.9 centimeters.

In summary, to convert inches to centimeters:

1. Write down the given value

2. Set up a proportion using the conversion ratio of 1 inch = 2.54 centimeters

3. Cross multiply and solve for x

4. Write the final answer, rounding to the nearest tenth if necessary.