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Finding the Fourth Proportional to 3,811.30, 5,713.08 and 2,578.84

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Solution

The fourth proportional to 3,811.30, 5,713.08 and 2,578.84 is: 3,865.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,811.30 : 5,713.08 = 2,578.84 : x
  2. Step 2: Convert to fraction form
    3,811.30/5,713.08 = 2,578.84/x
  3. Step 3: Cross multiply
    3,811.30x = 5,713.08 × 2,578.84
  4. Step 4: Simplify right side
    3,811.30x = 14,733,109.78
  5. Step 5: Solve for x
    x = 14,733,109.78/3,811.30
  6. Step 6: Final answer
    x = 3,865.64

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