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Finding the Fourth Proportional to 8,313.55, 12,470.32 and 5,545.62

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Solution

The fourth proportional to 8,313.55, 12,470.32 and 5,545.62 is: 8,318.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,313.55 : 12,470.32 = 5,545.62 : x
  2. Step 2: Convert to fraction form
    8,313.55/12,470.32 = 5,545.62/x
  3. Step 3: Cross multiply
    8,313.55x = 12,470.32 × 5,545.62
  4. Step 4: Simplify right side
    8,313.55x = 69,155,688.90
  5. Step 5: Solve for x
    x = 69,155,688.90/8,313.55
  6. Step 6: Final answer
    x = 8,318.43

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1.5x scale

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.