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Finding the Third Proportional to 3,665 and 4,006

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Solution

The third proportional to 3,665 and 4,006 is: 4,378.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,665 : 4,006 = 4,006 : x
  2. Step 2: Convert to fraction form
    3,665/4,006 = 4,006/x
  3. Step 3: Cross multiply
    3,665x = 4,006 × 4,006
  4. Step 4: Simplify right side
    3,665x = 16,048,036
  5. Step 5: Solve for x
    x = 16,048,036/3,665
  6. Step 6: Final answer
    x = 4,378.73

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Why These Related Problems?

These problems maintain the same ratio (1.09) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.