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Finding the Fourth Proportional to 8,604.72, 12,909.20 and 2,761.33

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Solution

The fourth proportional to 8,604.72, 12,909.20 and 2,761.33 is: 4,142.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,604.72 : 12,909.20 = 2,761.33 : x
  2. Step 2: Convert to fraction form
    8,604.72/12,909.20 = 2,761.33/x
  3. Step 3: Cross multiply
    8,604.72x = 12,909.20 × 2,761.33
  4. Step 4: Simplify right side
    8,604.72x = 35,646,561.24
  5. Step 5: Solve for x
    x = 35,646,561.24/8,604.72
  6. Step 6: Final answer
    x = 4,142.68

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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.