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Finding the Third Proportional to 7,716.50 and 11,895

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Solution

The third proportional to 7,716.50 and 11,895 is: 18,336.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,716.50 : 11,895 = 11,895 : x
  2. Step 2: Convert to fraction form
    7,716.50/11,895 = 11,895/x
  3. Step 3: Cross multiply
    7,716.50x = 11,895 × 11,895
  4. Step 4: Simplify right side
    7,716.50x = 141,491,025
  5. Step 5: Solve for x
    x = 141,491,025/7,716.50
  6. Step 6: Final answer
    x = 18,336.17

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Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.