Home / 3,939.41-5,437.78-3,519.03

Finding the Fourth Proportional to 3,939.41, 5,437.78 and 3,519.03

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Solution

The fourth proportional to 3,939.41, 5,437.78 and 3,519.03 is: 4,857.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,939.41 : 5,437.78 = 3,519.03 : x
  2. Step 2: Convert to fraction form
    3,939.41/5,437.78 = 3,519.03/x
  3. Step 3: Cross multiply
    3,939.41x = 5,437.78 × 3,519.03
  4. Step 4: Simplify right side
    3,939.41x = 19,135,735.74
  5. Step 5: Solve for x
    x = 19,135,735.74/3,939.41
  6. Step 6: Final answer
    x = 4,857.51

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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.