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Finding the Fourth Proportional to 3,579.04, 5,368.56 and 2,279.20

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Solution

The fourth proportional to 3,579.04, 5,368.56 and 2,279.20 is: 3,418.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,579.04 : 5,368.56 = 2,279.20 : x
  2. Step 2: Convert to fraction form
    3,579.04/5,368.56 = 2,279.20/x
  3. Step 3: Cross multiply
    3,579.04x = 5,368.56 × 2,279.20
  4. Step 4: Simplify right side
    3,579.04x = 12,236,021.95
  5. Step 5: Solve for x
    x = 12,236,021.95/3,579.04
  6. Step 6: Final answer
    x = 3,418.80

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