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Finding the Fourth Proportional to 7,107.32, 9,808.12 and 3,963.71

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Solution

The fourth proportional to 7,107.32, 9,808.12 and 3,963.71 is: 5,469.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,107.32 : 9,808.12 = 3,963.71 : x
  2. Step 2: Convert to fraction form
    7,107.32/9,808.12 = 3,963.71/x
  3. Step 3: Cross multiply
    7,107.32x = 9,808.12 × 3,963.71
  4. Step 4: Simplify right side
    7,107.32x = 38,876,572.80
  5. Step 5: Solve for x
    x = 38,876,572.80/7,107.32
  6. Step 6: Final answer
    x = 5,469.93

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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.