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Finding the Third Proportional to 6,639 and 9,206

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Solution

The third proportional to 6,639 and 9,206 is: 12,765.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,639 : 9,206 = 9,206 : x
  2. Step 2: Convert to fraction form
    6,639/9,206 = 9,206/x
  3. Step 3: Cross multiply
    6,639x = 9,206 × 9,206
  4. Step 4: Simplify right side
    6,639x = 84,750,436
  5. Step 5: Solve for x
    x = 84,750,436/6,639
  6. Step 6: Final answer
    x = 12,765.54

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.