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Finding the Fourth Proportional to 8,726.16, 12,041.92 and 4,747.20

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Solution

The fourth proportional to 8,726.16, 12,041.92 and 4,747.20 is: 6,551.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,726.16 : 12,041.92 = 4,747.20 : x
  2. Step 2: Convert to fraction form
    8,726.16/12,041.92 = 4,747.20/x
  3. Step 3: Cross multiply
    8,726.16x = 12,041.92 × 4,747.20
  4. Step 4: Simplify right side
    8,726.16x = 57,165,402.62
  5. Step 5: Solve for x
    x = 57,165,402.62/8,726.16
  6. Step 6: Final answer
    x = 6,551.04

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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.