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Finding the Fourth Proportional to 8,572.71, 12,854.62 and 3,309.56

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Solution

The fourth proportional to 8,572.71, 12,854.62 and 3,309.56 is: 4,962.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,572.71 : 12,854.62 = 3,309.56 : x
  2. Step 2: Convert to fraction form
    8,572.71/12,854.62 = 3,309.56/x
  3. Step 3: Cross multiply
    8,572.71x = 12,854.62 × 3,309.56
  4. Step 4: Simplify right side
    8,572.71x = 42,543,133.54
  5. Step 5: Solve for x
    x = 42,543,133.54/8,572.71
  6. Step 6: Final answer
    x = 4,962.62

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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.