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Finding the Fourth Proportional to 3,789.96, 5,686.59 and 1,326.54

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Solution

The fourth proportional to 3,789.96, 5,686.59 and 1,326.54 is: 1,990.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,789.96 : 5,686.59 = 1,326.54 : x
  2. Step 2: Convert to fraction form
    3,789.96/5,686.59 = 1,326.54/x
  3. Step 3: Cross multiply
    3,789.96x = 5,686.59 × 1,326.54
  4. Step 4: Simplify right side
    3,789.96x = 7,543,489.10
  5. Step 5: Solve for x
    x = 7,543,489.10/3,789.96
  6. Step 6: Final answer
    x = 1,990.39

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