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Finding the Fourth Proportional to 6,876.50, 9,489.22 and 3,892.46

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Solution

The fourth proportional to 6,876.50, 9,489.22 and 3,892.46 is: 5,371.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,876.50 : 9,489.22 = 3,892.46 : x
  2. Step 2: Convert to fraction form
    6,876.50/9,489.22 = 3,892.46/x
  3. Step 3: Cross multiply
    6,876.50x = 9,489.22 × 3,892.46
  4. Step 4: Simplify right side
    6,876.50x = 36,936,352.10
  5. Step 5: Solve for x
    x = 36,936,352.10/6,876.50
  6. Step 6: Final answer
    x = 5,371.39

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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.