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Finding the Fourth Proportional to 3,187.67, 4,782.33 and 996.30

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Solution

The fourth proportional to 3,187.67, 4,782.33 and 996.30 is: 1,494.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,187.67 : 4,782.33 = 996.30 : x
  2. Step 2: Convert to fraction form
    3,187.67/4,782.33 = 996.30/x
  3. Step 3: Cross multiply
    3,187.67x = 4,782.33 × 996.30
  4. Step 4: Simplify right side
    3,187.67x = 4,764,635.38
  5. Step 5: Solve for x
    x = 4,764,635.38/3,187.67
  6. Step 6: Final answer
    x = 1,494.71

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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.