Home / 3,105.93-4,285.62-2,515.44

Finding the Fourth Proportional to 3,105.93, 4,285.62 and 2,515.44

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Solution

The fourth proportional to 3,105.93, 4,285.62 and 2,515.44 is: 3,470.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,105.93 : 4,285.62 = 2,515.44 : x
  2. Step 2: Convert to fraction form
    3,105.93/4,285.62 = 2,515.44/x
  3. Step 3: Cross multiply
    3,105.93x = 4,285.62 × 2,515.44
  4. Step 4: Simplify right side
    3,105.93x = 10,780,219.97
  5. Step 5: Solve for x
    x = 10,780,219.97/3,105.93
  6. Step 6: Final answer
    x = 3,470.85

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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.