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Finding the Fourth Proportional to 1,961.88, 2,943.03 and 663.45

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Solution

The fourth proportional to 1,961.88, 2,943.03 and 663.45 is: 995.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,961.88 : 2,943.03 = 663.45 : x
  2. Step 2: Convert to fraction form
    1,961.88/2,943.03 = 663.45/x
  3. Step 3: Cross multiply
    1,961.88x = 2,943.03 × 663.45
  4. Step 4: Simplify right side
    1,961.88x = 1,952,553.25
  5. Step 5: Solve for x
    x = 1,952,553.25/1,961.88
  6. Step 6: Final answer
    x = 995.25

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