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Finding the Fourth Proportional to 4,791.56, 7,187.34 and 2,845.40

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Solution

The fourth proportional to 4,791.56, 7,187.34 and 2,845.40 is: 4,268.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,791.56 : 7,187.34 = 2,845.40 : x
  2. Step 2: Convert to fraction form
    4,791.56/7,187.34 = 2,845.40/x
  3. Step 3: Cross multiply
    4,791.56x = 7,187.34 × 2,845.40
  4. Step 4: Simplify right side
    4,791.56x = 20,450,857.24
  5. Step 5: Solve for x
    x = 20,450,857.24/4,791.56
  6. Step 6: Final answer
    x = 4,268.10

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