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Finding the Fourth Proportional to 3,351.07, 5,031.81 and 3,203.20

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Solution

The fourth proportional to 3,351.07, 5,031.81 and 3,203.20 is: 4,809.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,351.07 : 5,031.81 = 3,203.20 : x
  2. Step 2: Convert to fraction form
    3,351.07/5,031.81 = 3,203.20/x
  3. Step 3: Cross multiply
    3,351.07x = 5,031.81 × 3,203.20
  4. Step 4: Simplify right side
    3,351.07x = 16,117,893.79
  5. Step 5: Solve for x
    x = 16,117,893.79/3,351.07
  6. Step 6: Final answer
    x = 4,809.78

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