Home / 3,995.88-5,512.38-3,105.59

Finding the Fourth Proportional to 3,995.88, 5,512.38 and 3,105.59

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Solution

The fourth proportional to 3,995.88, 5,512.38 and 3,105.59 is: 4,284.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,995.88 : 5,512.38 = 3,105.59 : x
  2. Step 2: Convert to fraction form
    3,995.88/5,512.38 = 3,105.59/x
  3. Step 3: Cross multiply
    3,995.88x = 5,512.38 × 3,105.59
  4. Step 4: Simplify right side
    3,995.88x = 17,119,164.64
  5. Step 5: Solve for x
    x = 17,119,164.64/3,995.88
  6. Step 6: Final answer
    x = 4,284.20

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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.