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Finding the Third Proportional to 2,123 and 3,605

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Solution

The third proportional to 2,123 and 3,605 is: 6,121.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,123 : 3,605 = 3,605 : x
  2. Step 2: Convert to fraction form
    2,123/3,605 = 3,605/x
  3. Step 3: Cross multiply
    2,123x = 3,605 × 3,605
  4. Step 4: Simplify right side
    2,123x = 12,996,025
  5. Step 5: Solve for x
    x = 12,996,025/2,123
  6. Step 6: Final answer
    x = 6,121.54

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Why These Related Problems?

These problems maintain the same ratio (1.70) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.