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Finding the Fourth Proportional to 8,335.50, 12,503.10 and 2,789.22

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Solution

The fourth proportional to 8,335.50, 12,503.10 and 2,789.22 is: 4,183.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,335.50 : 12,503.10 = 2,789.22 : x
  2. Step 2: Convert to fraction form
    8,335.50/12,503.10 = 2,789.22/x
  3. Step 3: Cross multiply
    8,335.50x = 12,503.10 × 2,789.22
  4. Step 4: Simplify right side
    8,335.50x = 34,873,896.58
  5. Step 5: Solve for x
    x = 34,873,896.58/8,335.50
  6. Step 6: Final answer
    x = 4,183.78

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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.