Home / 3,723.69-5,138.30-2,231.57

Finding the Fourth Proportional to 3,723.69, 5,138.30 and 2,231.57

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Solution

The fourth proportional to 3,723.69, 5,138.30 and 2,231.57 is: 3,079.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,723.69 : 5,138.30 = 2,231.57 : x
  2. Step 2: Convert to fraction form
    3,723.69/5,138.30 = 2,231.57/x
  3. Step 3: Cross multiply
    3,723.69x = 5,138.30 × 2,231.57
  4. Step 4: Simplify right side
    3,723.69x = 11,466,450.44
  5. Step 5: Solve for x
    x = 11,466,450.44/3,723.69
  6. Step 6: Final answer
    x = 3,079.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.