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Finding the Fourth Proportional to 6,876.67, 9,489.86 and 3,732.88

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Solution

The fourth proportional to 6,876.67, 9,489.86 and 3,732.88 is: 5,151.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,876.67 : 9,489.86 = 3,732.88 : x
  2. Step 2: Convert to fraction form
    6,876.67/9,489.86 = 3,732.88/x
  3. Step 3: Cross multiply
    6,876.67x = 9,489.86 × 3,732.88
  4. Step 4: Simplify right side
    6,876.67x = 35,424,508.60
  5. Step 5: Solve for x
    x = 35,424,508.60/6,876.67
  6. Step 6: Final answer
    x = 5,151.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.