Home / 3,175.78-4,382.52-1,778.80

Finding the Fourth Proportional to 3,175.78, 4,382.52 and 1,778.80

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Solution

The fourth proportional to 3,175.78, 4,382.52 and 1,778.80 is: 2,454.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,175.78 : 4,382.52 = 1,778.80 : x
  2. Step 2: Convert to fraction form
    3,175.78/4,382.52 = 1,778.80/x
  3. Step 3: Cross multiply
    3,175.78x = 4,382.52 × 1,778.80
  4. Step 4: Simplify right side
    3,175.78x = 7,795,626.58
  5. Step 5: Solve for x
    x = 7,795,626.58/3,175.78
  6. Step 6: Final answer
    x = 2,454.71

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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.