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Finding the Fourth Proportional to 4,939.89, 7,410.03 and 2,165.19

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Solution

The fourth proportional to 4,939.89, 7,410.03 and 2,165.19 is: 3,247.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,939.89 : 7,410.03 = 2,165.19 : x
  2. Step 2: Convert to fraction form
    4,939.89/7,410.03 = 2,165.19/x
  3. Step 3: Cross multiply
    4,939.89x = 7,410.03 × 2,165.19
  4. Step 4: Simplify right side
    4,939.89x = 16,044,122.86
  5. Step 5: Solve for x
    x = 16,044,122.86/4,939.89
  6. Step 6: Final answer
    x = 3,247.87

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