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Finding the Third Proportional to 7,908 and 12,375

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Solution

The third proportional to 7,908 and 12,375 is: 19,365.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,908 : 12,375 = 12,375 : x
  2. Step 2: Convert to fraction form
    7,908/12,375 = 12,375/x
  3. Step 3: Cross multiply
    7,908x = 12,375 × 12,375
  4. Step 4: Simplify right side
    7,908x = 153,140,625
  5. Step 5: Solve for x
    x = 153,140,625/7,908
  6. Step 6: Final answer
    x = 19,365.28

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Why These Related Problems?

These problems maintain the same ratio (1.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.