Home / 3,986.22-5,979.57-1,213.09

Finding the Fourth Proportional to 3,986.22, 5,979.57 and 1,213.09

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Solution

The fourth proportional to 3,986.22, 5,979.57 and 1,213.09 is: 1,819.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,986.22 : 5,979.57 = 1,213.09 : x
  2. Step 2: Convert to fraction form
    3,986.22/5,979.57 = 1,213.09/x
  3. Step 3: Cross multiply
    3,986.22x = 5,979.57 × 1,213.09
  4. Step 4: Simplify right side
    3,986.22x = 7,253,756.57
  5. Step 5: Solve for x
    x = 7,253,756.57/3,986.22
  6. Step 6: Final answer
    x = 1,819.71

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1.5x scale

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.