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Finding the Third Proportional to 7,517 and 11,791

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Solution

The third proportional to 7,517 and 11,791 is: 18,495.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,517 : 11,791 = 11,791 : x
  2. Step 2: Convert to fraction form
    7,517/11,791 = 11,791/x
  3. Step 3: Cross multiply
    7,517x = 11,791 × 11,791
  4. Step 4: Simplify right side
    7,517x = 139,027,681
  5. Step 5: Solve for x
    x = 139,027,681/7,517
  6. Step 6: Final answer
    x = 18,495.10

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Why These Related Problems?

These problems maintain the same ratio (1.57) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.