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Finding the Third Proportional to 7,808.50 and 11,974

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Solution

The third proportional to 7,808.50 and 11,974 is: 18,361.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,808.50 : 11,974 = 11,974 : x
  2. Step 2: Convert to fraction form
    7,808.50/11,974 = 11,974/x
  3. Step 3: Cross multiply
    7,808.50x = 11,974 × 11,974
  4. Step 4: Simplify right side
    7,808.50x = 143,376,676
  5. Step 5: Solve for x
    x = 143,376,676/7,808.50
  6. Step 6: Final answer
    x = 18,361.62

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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.