Home / 3,939.44-5,434.09-2,765.75

Finding the Fourth Proportional to 3,939.44, 5,434.09 and 2,765.75

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Solution

The fourth proportional to 3,939.44, 5,434.09 and 2,765.75 is: 3,815.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,939.44 : 5,434.09 = 2,765.75 : x
  2. Step 2: Convert to fraction form
    3,939.44/5,434.09 = 2,765.75/x
  3. Step 3: Cross multiply
    3,939.44x = 5,434.09 × 2,765.75
  4. Step 4: Simplify right side
    3,939.44x = 15,029,300.33
  5. Step 5: Solve for x
    x = 15,029,300.33/3,939.44
  6. Step 6: Final answer
    x = 3,815.09

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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.