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Finding the Third Proportional to 3,721 and 4,036

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Solution

The third proportional to 3,721 and 4,036 is: 4,377.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,721 : 4,036 = 4,036 : x
  2. Step 2: Convert to fraction form
    3,721/4,036 = 4,036/x
  3. Step 3: Cross multiply
    3,721x = 4,036 × 4,036
  4. Step 4: Simplify right side
    3,721x = 16,289,296
  5. Step 5: Solve for x
    x = 16,289,296/3,721
  6. Step 6: Final answer
    x = 4,377.67

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Why These Related Problems?

These problems maintain the same ratio (1.08) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.