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Finding the Third Proportional to 7,975 and 12,087

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Solution

The third proportional to 7,975 and 12,087 is: 18,319.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,975 : 12,087 = 12,087 : x
  2. Step 2: Convert to fraction form
    7,975/12,087 = 12,087/x
  3. Step 3: Cross multiply
    7,975x = 12,087 × 12,087
  4. Step 4: Simplify right side
    7,975x = 146,095,569
  5. Step 5: Solve for x
    x = 146,095,569/7,975
  6. Step 6: Final answer
    x = 18,319.19

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Why These Related Problems?

These problems maintain the same ratio (1.52) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.