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Finding the Fourth Proportional to 8,160.64, 12,242.08 and 2,614.16

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Solution

The fourth proportional to 8,160.64, 12,242.08 and 2,614.16 is: 3,921.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,160.64 : 12,242.08 = 2,614.16 : x
  2. Step 2: Convert to fraction form
    8,160.64/12,242.08 = 2,614.16/x
  3. Step 3: Cross multiply
    8,160.64x = 12,242.08 × 2,614.16
  4. Step 4: Simplify right side
    8,160.64x = 32,002,755.85
  5. Step 5: Solve for x
    x = 32,002,755.85/8,160.64
  6. Step 6: Final answer
    x = 3,921.60

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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.