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Finding the Third Proportional to 4,102 and 5,647

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Solution

The third proportional to 4,102 and 5,647 is: 7,773.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,102 : 5,647 = 5,647 : x
  2. Step 2: Convert to fraction form
    4,102/5,647 = 5,647/x
  3. Step 3: Cross multiply
    4,102x = 5,647 × 5,647
  4. Step 4: Simplify right side
    4,102x = 31,888,609
  5. Step 5: Solve for x
    x = 31,888,609/4,102
  6. Step 6: Final answer
    x = 7,773.92

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.