Home / 3,105.70-4,661.28-2,619.09

Finding the Fourth Proportional to 3,105.70, 4,661.28 and 2,619.09

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Solution

The fourth proportional to 3,105.70, 4,661.28 and 2,619.09 is: 3,930.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,105.70 : 4,661.28 = 2,619.09 : x
  2. Step 2: Convert to fraction form
    3,105.70/4,661.28 = 2,619.09/x
  3. Step 3: Cross multiply
    3,105.70x = 4,661.28 × 2,619.09
  4. Step 4: Simplify right side
    3,105.70x = 12,208,311.84
  5. Step 5: Solve for x
    x = 12,208,311.84/3,105.70
  6. Step 6: Final answer
    x = 3,930.94

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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.