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Finding the Third Proportional to 6,450 and 13,860

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Solution

The third proportional to 6,450 and 13,860 is: 29,782.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,450 : 13,860 = 13,860 : x
  2. Step 2: Convert to fraction form
    6,450/13,860 = 13,860/x
  3. Step 3: Cross multiply
    6,450x = 13,860 × 13,860
  4. Step 4: Simplify right side
    6,450x = 192,099,600
  5. Step 5: Solve for x
    x = 192,099,600/6,450
  6. Step 6: Final answer
    x = 29,782.88

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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.