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Finding the Fourth Proportional to 5,138.43, 7,707.53 and 2,945.55

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Solution

The fourth proportional to 5,138.43, 7,707.53 and 2,945.55 is: 4,418.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,138.43 : 7,707.53 = 2,945.55 : x
  2. Step 2: Convert to fraction form
    5,138.43/7,707.53 = 2,945.55/x
  3. Step 3: Cross multiply
    5,138.43x = 7,707.53 × 2,945.55
  4. Step 4: Simplify right side
    5,138.43x = 22,702,900.26
  5. Step 5: Solve for x
    x = 22,702,900.26/5,138.43
  6. Step 6: Final answer
    x = 4,418.26

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