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Finding the Third Proportional to 3,828 and 6,912

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Solution

The third proportional to 3,828 and 6,912 is: 12,480.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,828 : 6,912 = 6,912 : x
  2. Step 2: Convert to fraction form
    3,828/6,912 = 6,912/x
  3. Step 3: Cross multiply
    3,828x = 6,912 × 6,912
  4. Step 4: Simplify right side
    3,828x = 47,775,744
  5. Step 5: Solve for x
    x = 47,775,744/3,828
  6. Step 6: Final answer
    x = 12,480.60

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Why These Related Problems?

These problems maintain the same ratio (1.81) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.