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Finding the Third Proportional to 7,788 and 11,619

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Solution

The third proportional to 7,788 and 11,619 is: 17,334.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,788 : 11,619 = 11,619 : x
  2. Step 2: Convert to fraction form
    7,788/11,619 = 11,619/x
  3. Step 3: Cross multiply
    7,788x = 11,619 × 11,619
  4. Step 4: Simplify right side
    7,788x = 135,001,161
  5. Step 5: Solve for x
    x = 135,001,161/7,788
  6. Step 6: Final answer
    x = 17,334.51

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.