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Finding the Fourth Proportional to 8,581.10, 12,874.07 and 5,074.20

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Solution

The fourth proportional to 8,581.10, 12,874.07 and 5,074.20 is: 7,612.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,581.10 : 12,874.07 = 5,074.20 : x
  2. Step 2: Convert to fraction form
    8,581.10/12,874.07 = 5,074.20/x
  3. Step 3: Cross multiply
    8,581.10x = 12,874.07 × 5,074.20
  4. Step 4: Simplify right side
    8,581.10x = 65,325,580.62
  5. Step 5: Solve for x
    x = 65,325,580.62/8,581.10
  6. Step 6: Final answer
    x = 7,612.73

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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.