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Finding the Fourth Proportional to 8,364.42, 12,540.92 and 3,982.32

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Solution

The fourth proportional to 8,364.42, 12,540.92 and 3,982.32 is: 5,970.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,364.42 : 12,540.92 = 3,982.32 : x
  2. Step 2: Convert to fraction form
    8,364.42/12,540.92 = 3,982.32/x
  3. Step 3: Cross multiply
    8,364.42x = 12,540.92 × 3,982.32
  4. Step 4: Simplify right side
    8,364.42x = 49,941,936.62
  5. Step 5: Solve for x
    x = 49,941,936.62/8,364.42
  6. Step 6: Final answer
    x = 5,970.76

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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.