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Finding the Third Proportional to 693 and 1,634

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Solution

The third proportional to 693 and 1,634 is: 3,852.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    693 : 1,634 = 1,634 : x
  2. Step 2: Convert to fraction form
    693/1,634 = 1,634/x
  3. Step 3: Cross multiply
    693x = 1,634 × 1,634
  4. Step 4: Simplify right side
    693x = 2,669,956
  5. Step 5: Solve for x
    x = 2,669,956/693
  6. Step 6: Final answer
    x = 3,852.75

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Why These Related Problems?

These problems maintain the same ratio (2.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.