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Finding the Fourth Proportional to 8,856.35, 12,219.97 and 6,731.31

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Solution

The fourth proportional to 8,856.35, 12,219.97 and 6,731.31 is: 9,287.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,856.35 : 12,219.97 = 6,731.31 : x
  2. Step 2: Convert to fraction form
    8,856.35/12,219.97 = 6,731.31/x
  3. Step 3: Cross multiply
    8,856.35x = 12,219.97 × 6,731.31
  4. Step 4: Simplify right side
    8,856.35x = 82,256,372.60
  5. Step 5: Solve for x
    x = 82,256,372.60/8,856.35
  6. Step 6: Final answer
    x = 9,287.85

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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.