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Finding the Fourth Proportional to 3,780.74, 5,671.10 and 1,183.88

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Solution

The fourth proportional to 3,780.74, 5,671.10 and 1,183.88 is: 1,775.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,780.74 : 5,671.10 = 1,183.88 : x
  2. Step 2: Convert to fraction form
    3,780.74/5,671.10 = 1,183.88/x
  3. Step 3: Cross multiply
    3,780.74x = 5,671.10 × 1,183.88
  4. Step 4: Simplify right side
    3,780.74x = 6,713,876.47
  5. Step 5: Solve for x
    x = 6,713,876.47/3,780.74
  6. Step 6: Final answer
    x = 1,775.81

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.