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Finding the Fourth Proportional to 8,335.80, 12,500.46 and 3,138.84

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Solution

The fourth proportional to 8,335.80, 12,500.46 and 3,138.84 is: 4,707.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,335.80 : 12,500.46 = 3,138.84 : x
  2. Step 2: Convert to fraction form
    8,335.80/12,500.46 = 3,138.84/x
  3. Step 3: Cross multiply
    8,335.80x = 12,500.46 × 3,138.84
  4. Step 4: Simplify right side
    8,335.80x = 39,236,943.87
  5. Step 5: Solve for x
    x = 39,236,943.87/8,335.80
  6. Step 6: Final answer
    x = 4,707.04

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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.