Home / 8,319.90-12,481.61-3,125.82

Finding the Fourth Proportional to 8,319.90, 12,481.61 and 3,125.82

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Solution

The fourth proportional to 8,319.90, 12,481.61 and 3,125.82 is: 4,689.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,319.90 : 12,481.61 = 3,125.82 : x
  2. Step 2: Convert to fraction form
    8,319.90/12,481.61 = 3,125.82/x
  3. Step 3: Cross multiply
    8,319.90x = 12,481.61 × 3,125.82
  4. Step 4: Simplify right side
    8,319.90x = 39,015,266.17
  5. Step 5: Solve for x
    x = 39,015,266.17/8,319.90
  6. Step 6: Final answer
    x = 4,689.39

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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.