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Finding the Fourth Proportional to 8,472.45, 12,704.34 and 4,963.58

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Solution

The fourth proportional to 8,472.45, 12,704.34 and 4,963.58 is: 7,442.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,472.45 : 12,704.34 = 4,963.58 : x
  2. Step 2: Convert to fraction form
    8,472.45/12,704.34 = 4,963.58/x
  3. Step 3: Cross multiply
    8,472.45x = 12,704.34 × 4,963.58
  4. Step 4: Simplify right side
    8,472.45x = 63,059,010.67
  5. Step 5: Solve for x
    x = 63,059,010.67/8,472.45
  6. Step 6: Final answer
    x = 7,442.83

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1.5x scale

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.