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Finding the Third Proportional to 3,107 and 4,223

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Solution

The third proportional to 3,107 and 4,223 is: 5,739.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,107 : 4,223 = 4,223 : x
  2. Step 2: Convert to fraction form
    3,107/4,223 = 4,223/x
  3. Step 3: Cross multiply
    3,107x = 4,223 × 4,223
  4. Step 4: Simplify right side
    3,107x = 17,833,729
  5. Step 5: Solve for x
    x = 17,833,729/3,107
  6. Step 6: Final answer
    x = 5,739.85

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Why These Related Problems?

These problems maintain the same ratio (1.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.