Home / 1,101.36-1,519.80-629.13

Finding the Fourth Proportional to 1,101.36, 1,519.80 and 629.13

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Solution

The fourth proportional to 1,101.36, 1,519.80 and 629.13 is: 868.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,101.36 : 1,519.80 = 629.13 : x
  2. Step 2: Convert to fraction form
    1,101.36/1,519.80 = 629.13/x
  3. Step 3: Cross multiply
    1,101.36x = 1,519.80 × 629.13
  4. Step 4: Simplify right side
    1,101.36x = 956,151.77
  5. Step 5: Solve for x
    x = 956,151.77/1,101.36
  6. Step 6: Final answer
    x = 868.16

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.