Home / 3,105.38-4,653.70-2,408.81

Finding the Fourth Proportional to 3,105.38, 4,653.70 and 2,408.81

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Solution

The fourth proportional to 3,105.38, 4,653.70 and 2,408.81 is: 3,609.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,105.38 : 4,653.70 = 2,408.81 : x
  2. Step 2: Convert to fraction form
    3,105.38/4,653.70 = 2,408.81/x
  3. Step 3: Cross multiply
    3,105.38x = 4,653.70 × 2,408.81
  4. Step 4: Simplify right side
    3,105.38x = 11,209,843.78
  5. Step 5: Solve for x
    x = 11,209,843.78/3,105.38
  6. Step 6: Final answer
    x = 3,609.82

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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.