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Finding the Fourth Proportional to 8,522.82, 12,765.66 and 4,131

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Solution

The fourth proportional to 8,522.82, 12,765.66 and 4,131 is: 6,187.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,522.82 : 12,765.66 = 4,131 : x
  2. Step 2: Convert to fraction form
    8,522.82/12,765.66 = 4,131/x
  3. Step 3: Cross multiply
    8,522.82x = 12,765.66 × 4,131
  4. Step 4: Simplify right side
    8,522.82x = 52,734,941.46
  5. Step 5: Solve for x
    x = 52,734,941.46/8,522.82
  6. Step 6: Final answer
    x = 6,187.50

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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.