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Finding the Fourth Proportional to 8,481.80, 12,719.10 and 4,100.60

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Solution

The fourth proportional to 8,481.80, 12,719.10 and 4,100.60 is: 6,149.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,481.80 : 12,719.10 = 4,100.60 : x
  2. Step 2: Convert to fraction form
    8,481.80/12,719.10 = 4,100.60/x
  3. Step 3: Cross multiply
    8,481.80x = 12,719.10 × 4,100.60
  4. Step 4: Simplify right side
    8,481.80x = 52,155,941.46
  5. Step 5: Solve for x
    x = 52,155,941.46/8,481.80
  6. Step 6: Final answer
    x = 6,149.16

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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.