Home / 3,186.50-4,778.84-1,338.03

Finding the Fourth Proportional to 3,186.50, 4,778.84 and 1,338.03

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Solution

The fourth proportional to 3,186.50, 4,778.84 and 1,338.03 is: 2,006.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,186.50 : 4,778.84 = 1,338.03 : x
  2. Step 2: Convert to fraction form
    3,186.50/4,778.84 = 1,338.03/x
  3. Step 3: Cross multiply
    3,186.50x = 4,778.84 × 1,338.03
  4. Step 4: Simplify right side
    3,186.50x = 6,394,231.29
  5. Step 5: Solve for x
    x = 6,394,231.29/3,186.50
  6. Step 6: Final answer
    x = 2,006.66

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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.