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Finding the Fourth Proportional to 1,947.54, 2,919.92 and 972.96

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Solution

The fourth proportional to 1,947.54, 2,919.92 and 972.96 is: 1,458.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,947.54 : 2,919.92 = 972.96 : x
  2. Step 2: Convert to fraction form
    1,947.54/2,919.92 = 972.96/x
  3. Step 3: Cross multiply
    1,947.54x = 2,919.92 × 972.96
  4. Step 4: Simplify right side
    1,947.54x = 2,840,965.36
  5. Step 5: Solve for x
    x = 2,840,965.36/1,947.54
  6. Step 6: Final answer
    x = 1,458.75

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