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Finding the Fourth Proportional to 4,737.28, 7,105.28 and 2,428.80

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Solution

The fourth proportional to 4,737.28, 7,105.28 and 2,428.80 is: 3,642.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,737.28 : 7,105.28 = 2,428.80 : x
  2. Step 2: Convert to fraction form
    4,737.28/7,105.28 = 2,428.80/x
  3. Step 3: Cross multiply
    4,737.28x = 7,105.28 × 2,428.80
  4. Step 4: Simplify right side
    4,737.28x = 17,257,304.06
  5. Step 5: Solve for x
    x = 17,257,304.06/4,737.28
  6. Step 6: Final answer
    x = 3,642.87

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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.