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Finding the Third Proportional to 3.95 and 8.59

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Solution

The third proportional to 3.95 and 8.59 is: 18.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    3.95 : 8.59 = 8.59 : x
  2. Step 2: Convert to fraction form
    3.95/8.59 = 8.59/x
  3. Step 3: Cross multiply
    3.95x = 8.59 × 8.59
  4. Step 4: Simplify right side
    3.95x = 73.83
  5. Step 5: Solve for x
    x = 73.83/3.95
  6. Step 6: Final answer
    x = 18.67

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.