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Finding the Fourth Proportional to 3,913.76, 5,401.14 and 2,145.33

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Solution

The fourth proportional to 3,913.76, 5,401.14 and 2,145.33 is: 2,960.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,913.76 : 5,401.14 = 2,145.33 : x
  2. Step 2: Convert to fraction form
    3,913.76/5,401.14 = 2,145.33/x
  3. Step 3: Cross multiply
    3,913.76x = 5,401.14 × 2,145.33
  4. Step 4: Simplify right side
    3,913.76x = 11,587,227.68
  5. Step 5: Solve for x
    x = 11,587,227.68/3,913.76
  6. Step 6: Final answer
    x = 2,960.64

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