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Finding the Third Proportional to 3.36 and 6.39

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Solution

The third proportional to 3.36 and 6.39 is: 12.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    3.36 : 6.39 = 6.39 : x
  2. Step 2: Convert to fraction form
    3.36/6.39 = 6.39/x
  3. Step 3: Cross multiply
    3.36x = 6.39 × 6.39
  4. Step 4: Simplify right side
    3.36x = 40.88
  5. Step 5: Solve for x
    x = 40.88/3.36
  6. Step 6: Final answer
    x = 12.17

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Why These Related Problems?

These problems maintain the same ratio (1.90) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.