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Finding the Fourth Proportional to 8,783.74, 13,163.90 and 3,231.95

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Solution

The fourth proportional to 8,783.74, 13,163.90 and 3,231.95 is: 4,843.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,783.74 : 13,163.90 = 3,231.95 : x
  2. Step 2: Convert to fraction form
    8,783.74/13,163.90 = 3,231.95/x
  3. Step 3: Cross multiply
    8,783.74x = 13,163.90 × 3,231.95
  4. Step 4: Simplify right side
    8,783.74x = 42,545,000.79
  5. Step 5: Solve for x
    x = 42,545,000.79/8,783.74
  6. Step 6: Final answer
    x = 4,843.61

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.