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Finding the Fourth Proportional to 8,340.48, 12,512.24 and 3,957.90

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Solution

The fourth proportional to 8,340.48, 12,512.24 and 3,957.90 is: 5,937.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,340.48 : 12,512.24 = 3,957.90 : x
  2. Step 2: Convert to fraction form
    8,340.48/12,512.24 = 3,957.90/x
  3. Step 3: Cross multiply
    8,340.48x = 12,512.24 × 3,957.90
  4. Step 4: Simplify right side
    8,340.48x = 49,522,194.70
  5. Step 5: Solve for x
    x = 49,522,194.70/8,340.48
  6. Step 6: Final answer
    x = 5,937.57

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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.