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Finding the Third Proportional to 3.96 and 6.75

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Solution

The third proportional to 3.96 and 6.75 is: 11.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    3.96 : 6.75 = 6.75 : x
  2. Step 2: Convert to fraction form
    3.96/6.75 = 6.75/x
  3. Step 3: Cross multiply
    3.96x = 6.75 × 6.75
  4. Step 4: Simplify right side
    3.96x = 45.60
  5. Step 5: Solve for x
    x = 45.60/3.96
  6. Step 6: Final answer
    x = 11.53

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Why These Related Problems?

These problems maintain the same ratio (1.71) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.