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Finding the Fourth Proportional to 8,772.28, 13,155.17 and 3,839.38

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Solution

The fourth proportional to 8,772.28, 13,155.17 and 3,839.38 is: 5,757.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,772.28 : 13,155.17 = 3,839.38 : x
  2. Step 2: Convert to fraction form
    8,772.28/13,155.17 = 3,839.38/x
  3. Step 3: Cross multiply
    8,772.28x = 13,155.17 × 3,839.38
  4. Step 4: Simplify right side
    8,772.28x = 50,507,696.59
  5. Step 5: Solve for x
    x = 50,507,696.59/8,772.28
  6. Step 6: Final answer
    x = 5,757.65

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.