Home / 3,861.38-5,329.62-2,290.38

Finding the Fourth Proportional to 3,861.38, 5,329.62 and 2,290.38

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Solution

The fourth proportional to 3,861.38, 5,329.62 and 2,290.38 is: 3,161.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,861.38 : 5,329.62 = 2,290.38 : x
  2. Step 2: Convert to fraction form
    3,861.38/5,329.62 = 2,290.38/x
  3. Step 3: Cross multiply
    3,861.38x = 5,329.62 × 2,290.38
  4. Step 4: Simplify right side
    3,861.38x = 12,206,855.06
  5. Step 5: Solve for x
    x = 12,206,855.06/3,861.38
  6. Step 6: Final answer
    x = 3,161.27

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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.