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Finding the Fourth Proportional to 8,495.28, 12,747.24 and 4,391.28

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Solution

The fourth proportional to 8,495.28, 12,747.24 and 4,391.28 is: 6,589.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,495.28 : 12,747.24 = 4,391.28 : x
  2. Step 2: Convert to fraction form
    8,495.28/12,747.24 = 4,391.28/x
  3. Step 3: Cross multiply
    8,495.28x = 12,747.24 × 4,391.28
  4. Step 4: Simplify right side
    8,495.28x = 55,976,700.07
  5. Step 5: Solve for x
    x = 55,976,700.07/8,495.28
  6. Step 6: Final answer
    x = 6,589.15

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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.