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Finding the Fourth Proportional to 8,374.46, 12,561.66 and 3,440.64

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Solution

The fourth proportional to 8,374.46, 12,561.66 and 3,440.64 is: 5,160.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,374.46 : 12,561.66 = 3,440.64 : x
  2. Step 2: Convert to fraction form
    8,374.46/12,561.66 = 3,440.64/x
  3. Step 3: Cross multiply
    8,374.46x = 12,561.66 × 3,440.64
  4. Step 4: Simplify right side
    8,374.46x = 43,220,149.86
  5. Step 5: Solve for x
    x = 43,220,149.86/8,374.46
  6. Step 6: Final answer
    x = 5,160.95

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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.