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Finding the Fourth Proportional to 7,783.22, 11,674.73 and 1,939.88

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Solution

The fourth proportional to 7,783.22, 11,674.73 and 1,939.88 is: 2,909.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,783.22 : 11,674.73 = 1,939.88 : x
  2. Step 2: Convert to fraction form
    7,783.22/11,674.73 = 1,939.88/x
  3. Step 3: Cross multiply
    7,783.22x = 11,674.73 × 1,939.88
  4. Step 4: Simplify right side
    7,783.22x = 22,647,609.27
  5. Step 5: Solve for x
    x = 22,647,609.27/7,783.22
  6. Step 6: Final answer
    x = 2,909.80

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