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Finding the Fourth Proportional to 8,259.95, 12,385.28 and 2,711.79

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Solution

The fourth proportional to 8,259.95, 12,385.28 and 2,711.79 is: 4,066.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,259.95 : 12,385.28 = 2,711.79 : x
  2. Step 2: Convert to fraction form
    8,259.95/12,385.28 = 2,711.79/x
  3. Step 3: Cross multiply
    8,259.95x = 12,385.28 × 2,711.79
  4. Step 4: Simplify right side
    8,259.95x = 33,586,285.23
  5. Step 5: Solve for x
    x = 33,586,285.23/8,259.95
  6. Step 6: Final answer
    x = 4,066.16

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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.