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Finding the Third Proportional to 3,318 and 7,975

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Solution

The third proportional to 3,318 and 7,975 is: 19,168.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,318 : 7,975 = 7,975 : x
  2. Step 2: Convert to fraction form
    3,318/7,975 = 7,975/x
  3. Step 3: Cross multiply
    3,318x = 7,975 × 7,975
  4. Step 4: Simplify right side
    3,318x = 63,600,625
  5. Step 5: Solve for x
    x = 63,600,625/3,318
  6. Step 6: Final answer
    x = 19,168.36

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Why These Related Problems?

These problems maintain the same ratio (2.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.