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Finding the Fourth Proportional to 8,438.43, 12,605.03 and 6,251.43

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Solution

The fourth proportional to 8,438.43, 12,605.03 and 6,251.43 is: 9,338.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,438.43 : 12,605.03 = 6,251.43 : x
  2. Step 2: Convert to fraction form
    8,438.43/12,605.03 = 6,251.43/x
  3. Step 3: Cross multiply
    8,438.43x = 12,605.03 × 6,251.43
  4. Step 4: Simplify right side
    8,438.43x = 78,799,478.32
  5. Step 5: Solve for x
    x = 78,799,478.32/8,438.43
  6. Step 6: Final answer
    x = 9,338.17

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.