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Finding the Third Proportional to 1,243 and 1,966

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Solution

The third proportional to 1,243 and 1,966 is: 3,109.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,243 : 1,966 = 1,966 : x
  2. Step 2: Convert to fraction form
    1,243/1,966 = 1,966/x
  3. Step 3: Cross multiply
    1,243x = 1,966 × 1,966
  4. Step 4: Simplify right side
    1,243x = 3,865,156
  5. Step 5: Solve for x
    x = 3,865,156/1,243
  6. Step 6: Final answer
    x = 3,109.54

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Why These Related Problems?

These problems maintain the same ratio (1.58) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.