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Finding the Fourth Proportional to 8,522.75, 12,765.67 and 4,131

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Solution

The fourth proportional to 8,522.75, 12,765.67 and 4,131 is: 6,187.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,522.75 : 12,765.67 = 4,131 : x
  2. Step 2: Convert to fraction form
    8,522.75/12,765.67 = 4,131/x
  3. Step 3: Cross multiply
    8,522.75x = 12,765.67 × 4,131
  4. Step 4: Simplify right side
    8,522.75x = 52,734,972.44
  5. Step 5: Solve for x
    x = 52,734,972.44/8,522.75
  6. Step 6: Final answer
    x = 6,187.55

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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.