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Finding the Third Proportional to 3,139 and 6,873

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Solution

The third proportional to 3,139 and 6,873 is: 15,048.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,139 : 6,873 = 6,873 : x
  2. Step 2: Convert to fraction form
    3,139/6,873 = 6,873/x
  3. Step 3: Cross multiply
    3,139x = 6,873 × 6,873
  4. Step 4: Simplify right side
    3,139x = 47,238,129
  5. Step 5: Solve for x
    x = 47,238,129/3,139
  6. Step 6: Final answer
    x = 15,048.78

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.