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Finding the Fourth Proportional to 8,469.40, 12,703.41 and 3,789.67

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Solution

The fourth proportional to 8,469.40, 12,703.41 and 3,789.67 is: 5,684.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,469.40 : 12,703.41 = 3,789.67 : x
  2. Step 2: Convert to fraction form
    8,469.40/12,703.41 = 3,789.67/x
  3. Step 3: Cross multiply
    8,469.40x = 12,703.41 × 3,789.67
  4. Step 4: Simplify right side
    8,469.40x = 48,141,731.77
  5. Step 5: Solve for x
    x = 48,141,731.77/8,469.40
  6. Step 6: Final answer
    x = 5,684.20

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