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Finding the Fourth Proportional to 9,115.10, 13,672.65 and 4,967.90

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Solution

The fourth proportional to 9,115.10, 13,672.65 and 4,967.90 is: 7,451.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,115.10 : 13,672.65 = 4,967.90 : x
  2. Step 2: Convert to fraction form
    9,115.10/13,672.65 = 4,967.90/x
  3. Step 3: Cross multiply
    9,115.10x = 13,672.65 × 4,967.90
  4. Step 4: Simplify right side
    9,115.10x = 67,924,357.94
  5. Step 5: Solve for x
    x = 67,924,357.94/9,115.10
  6. Step 6: Final answer
    x = 7,451.85

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1.5x scale

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.