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Finding the Fourth Proportional to 4,828.71, 7,247.17 and 2,638.98

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Solution

The fourth proportional to 4,828.71, 7,247.17 and 2,638.98 is: 3,960.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,828.71 : 7,247.17 = 2,638.98 : x
  2. Step 2: Convert to fraction form
    4,828.71/7,247.17 = 2,638.98/x
  3. Step 3: Cross multiply
    4,828.71x = 7,247.17 × 2,638.98
  4. Step 4: Simplify right side
    4,828.71x = 19,125,139.99
  5. Step 5: Solve for x
    x = 19,125,139.99/4,828.71
  6. Step 6: Final answer
    x = 3,960.71

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