Home / 2,939.20-4,408.80-2,290.42

Finding the Fourth Proportional to 2,939.20, 4,408.80 and 2,290.42

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Solution

The fourth proportional to 2,939.20, 4,408.80 and 2,290.42 is: 3,435.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,939.20 : 4,408.80 = 2,290.42 : x
  2. Step 2: Convert to fraction form
    2,939.20/4,408.80 = 2,290.42/x
  3. Step 3: Cross multiply
    2,939.20x = 4,408.80 × 2,290.42
  4. Step 4: Simplify right side
    2,939.20x = 10,098,003.70
  5. Step 5: Solve for x
    x = 10,098,003.70/2,939.20
  6. Step 6: Final answer
    x = 3,435.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.