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Finding the Fourth Proportional to 8,751.42, 13,117.39 and 4,591.90

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Solution

The fourth proportional to 8,751.42, 13,117.39 and 4,591.90 is: 6,882.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,751.42 : 13,117.39 = 4,591.90 : x
  2. Step 2: Convert to fraction form
    8,751.42/13,117.39 = 4,591.90/x
  3. Step 3: Cross multiply
    8,751.42x = 13,117.39 × 4,591.90
  4. Step 4: Simplify right side
    8,751.42x = 60,233,748.06
  5. Step 5: Solve for x
    x = 60,233,748.06/8,751.42
  6. Step 6: Final answer
    x = 6,882.74

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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.