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Finding the Third Proportional to 3.99 and 6.27

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Solution

The third proportional to 3.99 and 6.27 is: 9.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    3.99 : 6.27 = 6.27 : x
  2. Step 2: Convert to fraction form
    3.99/6.27 = 6.27/x
  3. Step 3: Cross multiply
    3.99x = 6.27 × 6.27
  4. Step 4: Simplify right side
    3.99x = 39.34
  5. Step 5: Solve for x
    x = 39.34/3.99
  6. Step 6: Final answer
    x = 9.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.57) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.