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Finding the Third Proportional to 3,640 and 4,450

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Solution

The third proportional to 3,640 and 4,450 is: 5,440.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,640 : 4,450 = 4,450 : x
  2. Step 2: Convert to fraction form
    3,640/4,450 = 4,450/x
  3. Step 3: Cross multiply
    3,640x = 4,450 × 4,450
  4. Step 4: Simplify right side
    3,640x = 19,802,500
  5. Step 5: Solve for x
    x = 19,802,500/3,640
  6. Step 6: Final answer
    x = 5,440.25

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Why These Related Problems?

These problems maintain the same ratio (1.22) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.