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Finding the Fourth Proportional to 3,486.60, 5,225.04 and 2,619.90

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Solution

The fourth proportional to 3,486.60, 5,225.04 and 2,619.90 is: 3,926.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,486.60 : 5,225.04 = 2,619.90 : x
  2. Step 2: Convert to fraction form
    3,486.60/5,225.04 = 2,619.90/x
  3. Step 3: Cross multiply
    3,486.60x = 5,225.04 × 2,619.90
  4. Step 4: Simplify right side
    3,486.60x = 13,689,082.30
  5. Step 5: Solve for x
    x = 13,689,082.30/3,486.60
  6. Step 6: Final answer
    x = 3,926.20

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