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Finding the Fourth Proportional to 3,836.89, 5,755.68 and 1,645.11

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Solution

The fourth proportional to 3,836.89, 5,755.68 and 1,645.11 is: 2,467.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,836.89 : 5,755.68 = 1,645.11 : x
  2. Step 2: Convert to fraction form
    3,836.89/5,755.68 = 1,645.11/x
  3. Step 3: Cross multiply
    3,836.89x = 5,755.68 × 1,645.11
  4. Step 4: Simplify right side
    3,836.89x = 9,468,731.35
  5. Step 5: Solve for x
    x = 9,468,731.35/3,836.89
  6. Step 6: Final answer
    x = 2,467.81

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