Home / 8,517.95-12,778.55-2,972.88

Finding the Fourth Proportional to 8,517.95, 12,778.55 and 2,972.88

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Solution

The fourth proportional to 8,517.95, 12,778.55 and 2,972.88 is: 4,459.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,517.95 : 12,778.55 = 2,972.88 : x
  2. Step 2: Convert to fraction form
    8,517.95/12,778.55 = 2,972.88/x
  3. Step 3: Cross multiply
    8,517.95x = 12,778.55 × 2,972.88
  4. Step 4: Simplify right side
    8,517.95x = 37,989,092.01
  5. Step 5: Solve for x
    x = 37,989,092.01/8,517.95
  6. Step 6: Final answer
    x = 4,459.89

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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.