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Finding the Fourth Proportional to 3,188.52, 4,782.09 and 996.05

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Solution

The fourth proportional to 3,188.52, 4,782.09 and 996.05 is: 1,493.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,188.52 : 4,782.09 = 996.05 : x
  2. Step 2: Convert to fraction form
    3,188.52/4,782.09 = 996.05/x
  3. Step 3: Cross multiply
    3,188.52x = 4,782.09 × 996.05
  4. Step 4: Simplify right side
    3,188.52x = 4,763,176.83
  5. Step 5: Solve for x
    x = 4,763,176.83/3,188.52
  6. Step 6: Final answer
    x = 1,493.85

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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.