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Finding the Third Proportional to 3,897 and 6,787

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Solution

The third proportional to 3,897 and 6,787 is: 11,820.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,897 : 6,787 = 6,787 : x
  2. Step 2: Convert to fraction form
    3,897/6,787 = 6,787/x
  3. Step 3: Cross multiply
    3,897x = 6,787 × 6,787
  4. Step 4: Simplify right side
    3,897x = 46,063,369
  5. Step 5: Solve for x
    x = 46,063,369/3,897
  6. Step 6: Final answer
    x = 11,820.21

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Why These Related Problems?

These problems maintain the same ratio (1.74) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.