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Finding the Fourth Proportional to 8,247, 12,372.42 and 2,775

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Solution

The fourth proportional to 8,247, 12,372.42 and 2,775 is: 4,163.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,247 : 12,372.42 = 2,775 : x
  2. Step 2: Convert to fraction form
    8,247/12,372.42 = 2,775/x
  3. Step 3: Cross multiply
    8,247x = 12,372.42 × 2,775
  4. Step 4: Simplify right side
    8,247x = 34,333,465.50
  5. Step 5: Solve for x
    x = 34,333,465.50/8,247
  6. Step 6: Final answer
    x = 4,163.15

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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.