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Finding the Third Proportional to 3,515 and 5,262.75

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Solution

The third proportional to 3,515 and 5,262.75 is: 7,879.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,515 : 5,262.75 = 5,262.75 : x
  2. Step 2: Convert to fraction form
    3,515/5,262.75 = 5,262.75/x
  3. Step 3: Cross multiply
    3,515x = 5,262.75 × 5,262.75
  4. Step 4: Simplify right side
    3,515x = 27,696,537.56
  5. Step 5: Solve for x
    x = 27,696,537.56/3,515
  6. Step 6: Final answer
    x = 7,879.53

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.