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Finding the Third Proportional to 7,670 and 11,723

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Solution

The third proportional to 7,670 and 11,723 is: 17,917.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,670 : 11,723 = 11,723 : x
  2. Step 2: Convert to fraction form
    7,670/11,723 = 11,723/x
  3. Step 3: Cross multiply
    7,670x = 11,723 × 11,723
  4. Step 4: Simplify right side
    7,670x = 137,428,729
  5. Step 5: Solve for x
    x = 137,428,729/7,670
  6. Step 6: Final answer
    x = 17,917.70

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.