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Finding the Third Proportional to 3.79 and 5.71

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Solution

The third proportional to 3.79 and 5.71 is: 8.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    3.79 : 5.71 = 5.71 : x
  2. Step 2: Convert to fraction form
    3.79/5.71 = 5.71/x
  3. Step 3: Cross multiply
    3.79x = 5.71 × 5.71
  4. Step 4: Simplify right side
    3.79x = 32.66
  5. Step 5: Solve for x
    x = 32.66/3.79
  6. Step 6: Final answer
    x = 8.61

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.