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Finding the Third Proportional to 1,879 and 4,031

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Solution

The third proportional to 1,879 and 4,031 is: 8,647.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,879 : 4,031 = 4,031 : x
  2. Step 2: Convert to fraction form
    1,879/4,031 = 4,031/x
  3. Step 3: Cross multiply
    1,879x = 4,031 × 4,031
  4. Step 4: Simplify right side
    1,879x = 16,248,961
  5. Step 5: Solve for x
    x = 16,248,961/1,879
  6. Step 6: Final answer
    x = 8,647.66

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.