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Finding the Fourth Proportional to 3,912.05, 5,867.71 and 1,315.01

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Solution

The fourth proportional to 3,912.05, 5,867.71 and 1,315.01 is: 1,972.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,912.05 : 5,867.71 = 1,315.01 : x
  2. Step 2: Convert to fraction form
    3,912.05/5,867.71 = 1,315.01/x
  3. Step 3: Cross multiply
    3,912.05x = 5,867.71 × 1,315.01
  4. Step 4: Simplify right side
    3,912.05x = 7,716,097.33
  5. Step 5: Solve for x
    x = 7,716,097.33/3,912.05
  6. Step 6: Final answer
    x = 1,972.39

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