Home / 8,418.10-12,630.79-4,517.95

Finding the Fourth Proportional to 8,418.10, 12,630.79 and 4,517.95

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Solution

The fourth proportional to 8,418.10, 12,630.79 and 4,517.95 is: 6,778.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,418.10 : 12,630.79 = 4,517.95 : x
  2. Step 2: Convert to fraction form
    8,418.10/12,630.79 = 4,517.95/x
  3. Step 3: Cross multiply
    8,418.10x = 12,630.79 × 4,517.95
  4. Step 4: Simplify right side
    8,418.10x = 57,065,214.53
  5. Step 5: Solve for x
    x = 57,065,214.53/8,418.10
  6. Step 6: Final answer
    x = 6,778.88

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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.