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Finding the Third Proportional to 2,640 and 3,771

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Solution

The third proportional to 2,640 and 3,771 is: 5,386.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,640 : 3,771 = 3,771 : x
  2. Step 2: Convert to fraction form
    2,640/3,771 = 3,771/x
  3. Step 3: Cross multiply
    2,640x = 3,771 × 3,771
  4. Step 4: Simplify right side
    2,640x = 14,220,441
  5. Step 5: Solve for x
    x = 14,220,441/2,640
  6. Step 6: Final answer
    x = 5,386.53

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Why These Related Problems?

These problems maintain the same ratio (1.43) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.