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Finding the Third Proportional to 869 and 2,245

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Solution

The third proportional to 869 and 2,245 is: 5,799.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    869 : 2,245 = 2,245 : x
  2. Step 2: Convert to fraction form
    869/2,245 = 2,245/x
  3. Step 3: Cross multiply
    869x = 2,245 × 2,245
  4. Step 4: Simplify right side
    869x = 5,040,025
  5. Step 5: Solve for x
    x = 5,040,025/869
  6. Step 6: Final answer
    x = 5,799.80

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Why These Related Problems?

These problems maintain the same ratio (2.58) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.