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Finding the Third Proportional to 2,980 and 6,897

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Solution

The third proportional to 2,980 and 6,897 is: 15,962.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,980 : 6,897 = 6,897 : x
  2. Step 2: Convert to fraction form
    2,980/6,897 = 6,897/x
  3. Step 3: Cross multiply
    2,980x = 6,897 × 6,897
  4. Step 4: Simplify right side
    2,980x = 47,568,609
  5. Step 5: Solve for x
    x = 47,568,609/2,980
  6. Step 6: Final answer
    x = 15,962.62

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Why These Related Problems?

These problems maintain the same ratio (2.31) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.