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Finding the Fourth Proportional to 7,107.42, 9,808.22 and 3,963.61

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Solution

The fourth proportional to 7,107.42, 9,808.22 and 3,963.61 is: 5,469.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,107.42 : 9,808.22 = 3,963.61 : x
  2. Step 2: Convert to fraction form
    7,107.42/9,808.22 = 3,963.61/x
  3. Step 3: Cross multiply
    7,107.42x = 9,808.22 × 3,963.61
  4. Step 4: Simplify right side
    7,107.42x = 38,875,890.02
  5. Step 5: Solve for x
    x = 38,875,890.02/7,107.42
  6. Step 6: Final answer
    x = 5,469.76

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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.