Home / 3,943.74-5,440.32-3,198.54

Finding the Fourth Proportional to 3,943.74, 5,440.32 and 3,198.54

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Solution

The fourth proportional to 3,943.74, 5,440.32 and 3,198.54 is: 4,412.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,943.74 : 5,440.32 = 3,198.54 : x
  2. Step 2: Convert to fraction form
    3,943.74/5,440.32 = 3,198.54/x
  3. Step 3: Cross multiply
    3,943.74x = 5,440.32 × 3,198.54
  4. Step 4: Simplify right side
    3,943.74x = 17,401,081.13
  5. Step 5: Solve for x
    x = 17,401,081.13/3,943.74
  6. Step 6: Final answer
    x = 4,412.33

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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.