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Finding the Fourth Proportional to 7,184.78, 10,775.94 and 1,989.44

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Solution

The fourth proportional to 7,184.78, 10,775.94 and 1,989.44 is: 2,983.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,184.78 : 10,775.94 = 1,989.44 : x
  2. Step 2: Convert to fraction form
    7,184.78/10,775.94 = 1,989.44/x
  3. Step 3: Cross multiply
    7,184.78x = 10,775.94 × 1,989.44
  4. Step 4: Simplify right side
    7,184.78x = 21,438,086.07
  5. Step 5: Solve for x
    x = 21,438,086.07/7,184.78
  6. Step 6: Final answer
    x = 2,983.82

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