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Finding the Fourth Proportional to 8,642.44, 12,963.96 and 4,942.97

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Solution

The fourth proportional to 8,642.44, 12,963.96 and 4,942.97 is: 7,414.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,642.44 : 12,963.96 = 4,942.97 : x
  2. Step 2: Convert to fraction form
    8,642.44/12,963.96 = 4,942.97/x
  3. Step 3: Cross multiply
    8,642.44x = 12,963.96 × 4,942.97
  4. Step 4: Simplify right side
    8,642.44x = 64,080,400.54
  5. Step 5: Solve for x
    x = 64,080,400.54/8,642.44
  6. Step 6: Final answer
    x = 7,414.62

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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.