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Finding the Fourth Proportional to 3,765, 5,195.69 and 2,086.41

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Solution

The fourth proportional to 3,765, 5,195.69 and 2,086.41 is: 2,879.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,765 : 5,195.69 = 2,086.41 : x
  2. Step 2: Convert to fraction form
    3,765/5,195.69 = 2,086.41/x
  3. Step 3: Cross multiply
    3,765x = 5,195.69 × 2,086.41
  4. Step 4: Simplify right side
    3,765x = 10,840,339.57
  5. Step 5: Solve for x
    x = 10,840,339.57/3,765
  6. Step 6: Final answer
    x = 2,879.24

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.