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Finding the Third Proportional to 2.89 and 7.95

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Solution

The third proportional to 2.89 and 7.95 is: 21.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    2.89 : 7.95 = 7.95 : x
  2. Step 2: Convert to fraction form
    2.89/7.95 = 7.95/x
  3. Step 3: Cross multiply
    2.89x = 7.95 × 7.95
  4. Step 4: Simplify right side
    2.89x = 63.27
  5. Step 5: Solve for x
    x = 63.27/2.89
  6. Step 6: Final answer
    x = 21.87

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Why These Related Problems?

These problems maintain the same ratio (2.75) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.