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Finding the Fourth Proportional to 8,340.76, 12,512.66 and 3,958.17

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Solution

The fourth proportional to 8,340.76, 12,512.66 and 3,958.17 is: 5,937.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,340.76 : 12,512.66 = 3,958.17 : x
  2. Step 2: Convert to fraction form
    8,340.76/12,512.66 = 3,958.17/x
  3. Step 3: Cross multiply
    8,340.76x = 12,512.66 × 3,958.17
  4. Step 4: Simplify right side
    8,340.76x = 49,527,235.43
  5. Step 5: Solve for x
    x = 49,527,235.43/8,340.76
  6. Step 6: Final answer
    x = 5,937.98

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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.