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Finding the Third Proportional to 986.75 and 2,125.38

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Solution

The third proportional to 986.75 and 2,125.38 is: 4,577.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    986.75 : 2,125.38 = 2,125.38 : x
  2. Step 2: Convert to fraction form
    986.75/2,125.38 = 2,125.38/x
  3. Step 3: Cross multiply
    986.75x = 2,125.38 × 2,125.38
  4. Step 4: Simplify right side
    986.75x = 4,517,218.89
  5. Step 5: Solve for x
    x = 4,517,218.89/986.75
  6. Step 6: Final answer
    x = 4,577.88

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.