Home / 8,319.18-12,481.02-3,639.61

Finding the Fourth Proportional to 8,319.18, 12,481.02 and 3,639.61

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Solution

The fourth proportional to 8,319.18, 12,481.02 and 3,639.61 is: 5,460.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,319.18 : 12,481.02 = 3,639.61 : x
  2. Step 2: Convert to fraction form
    8,319.18/12,481.02 = 3,639.61/x
  3. Step 3: Cross multiply
    8,319.18x = 12,481.02 × 3,639.61
  4. Step 4: Simplify right side
    8,319.18x = 45,425,964.60
  5. Step 5: Solve for x
    x = 45,425,964.60/8,319.18
  6. Step 6: Final answer
    x = 5,460.39

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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.