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Finding the Fourth Proportional to 3,765.86, 5,648.83 and 1,791.70

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Solution

The fourth proportional to 3,765.86, 5,648.83 and 1,791.70 is: 2,687.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,765.86 : 5,648.83 = 1,791.70 : x
  2. Step 2: Convert to fraction form
    3,765.86/5,648.83 = 1,791.70/x
  3. Step 3: Cross multiply
    3,765.86x = 5,648.83 × 1,791.70
  4. Step 4: Simplify right side
    3,765.86x = 10,121,008.71
  5. Step 5: Solve for x
    x = 10,121,008.71/3,765.86
  6. Step 6: Final answer
    x = 2,687.57

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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.