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Finding the Fourth Proportional to 8,942.39, 12,340.40 and 4,963.40

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Solution

The fourth proportional to 8,942.39, 12,340.40 and 4,963.40 is: 6,849.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,942.39 : 12,340.40 = 4,963.40 : x
  2. Step 2: Convert to fraction form
    8,942.39/12,340.40 = 4,963.40/x
  3. Step 3: Cross multiply
    8,942.39x = 12,340.40 × 4,963.40
  4. Step 4: Simplify right side
    8,942.39x = 61,250,279.66
  5. Step 5: Solve for x
    x = 61,250,279.66/8,942.39
  6. Step 6: Final answer
    x = 6,849.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.