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Finding the Fourth Proportional to 6,624.54, 9,140.49 and 3,971.34

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Solution

The fourth proportional to 6,624.54, 9,140.49 and 3,971.34 is: 5,479.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,624.54 : 9,140.49 = 3,971.34 : x
  2. Step 2: Convert to fraction form
    6,624.54/9,140.49 = 3,971.34/x
  3. Step 3: Cross multiply
    6,624.54x = 9,140.49 × 3,971.34
  4. Step 4: Simplify right side
    6,624.54x = 36,299,993.56
  5. Step 5: Solve for x
    x = 36,299,993.56/6,624.54
  6. Step 6: Final answer
    x = 5,479.62

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