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Finding the Third Proportional to 3,640 and 4,012

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Solution

The third proportional to 3,640 and 4,012 is: 4,422.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,640 : 4,012 = 4,012 : x
  2. Step 2: Convert to fraction form
    3,640/4,012 = 4,012/x
  3. Step 3: Cross multiply
    3,640x = 4,012 × 4,012
  4. Step 4: Simplify right side
    3,640x = 16,096,144
  5. Step 5: Solve for x
    x = 16,096,144/3,640
  6. Step 6: Final answer
    x = 4,422.02

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Why These Related Problems?

These problems maintain the same ratio (1.10) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.