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Finding the Third Proportional to 3,777.19 and 5,491.13

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Solution

The third proportional to 3,777.19 and 5,491.13 is: 7,982.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,777.19 : 5,491.13 = 5,491.13 : x
  2. Step 2: Convert to fraction form
    3,777.19/5,491.13 = 5,491.13/x
  3. Step 3: Cross multiply
    3,777.19x = 5,491.13 × 5,491.13
  4. Step 4: Simplify right side
    3,777.19x = 30,152,453.77
  5. Step 5: Solve for x
    x = 30,152,453.77/3,777.19
  6. Step 6: Final answer
    x = 7,982.78

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Why These Related Problems?

These problems maintain the same ratio (1.45) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.