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Finding the Third Proportional to 2,031 and 2,847

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Solution

The third proportional to 2,031 and 2,847 is: 3,990.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,031 : 2,847 = 2,847 : x
  2. Step 2: Convert to fraction form
    2,031/2,847 = 2,847/x
  3. Step 3: Cross multiply
    2,031x = 2,847 × 2,847
  4. Step 4: Simplify right side
    2,031x = 8,105,409
  5. Step 5: Solve for x
    x = 8,105,409/2,031
  6. Step 6: Final answer
    x = 3,990.85

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.