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Finding the Fourth Proportional to 8,517.42, 12,693.62 and 8,074.55

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Solution

The fourth proportional to 8,517.42, 12,693.62 and 8,074.55 is: 12,033.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,517.42 : 12,693.62 = 8,074.55 : x
  2. Step 2: Convert to fraction form
    8,517.42/12,693.62 = 8,074.55/x
  3. Step 3: Cross multiply
    8,517.42x = 12,693.62 × 8,074.55
  4. Step 4: Simplify right side
    8,517.42x = 102,495,321.29
  5. Step 5: Solve for x
    x = 102,495,321.29/8,517.42
  6. Step 6: Final answer
    x = 12,033.61

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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.