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Finding the Third Proportional to 3,185 and 4,279

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Solution

The third proportional to 3,185 and 4,279 is: 5,748.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,185 : 4,279 = 4,279 : x
  2. Step 2: Convert to fraction form
    3,185/4,279 = 4,279/x
  3. Step 3: Cross multiply
    3,185x = 4,279 × 4,279
  4. Step 4: Simplify right side
    3,185x = 18,309,841
  5. Step 5: Solve for x
    x = 18,309,841/3,185
  6. Step 6: Final answer
    x = 5,748.77

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Why These Related Problems?

These problems maintain the same ratio (1.34) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.