Home / 3,175.80-4,382.60-1,778.56

Finding the Fourth Proportional to 3,175.80, 4,382.60 and 1,778.56

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Solution

The fourth proportional to 3,175.80, 4,382.60 and 1,778.56 is: 2,454.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,175.80 : 4,382.60 = 1,778.56 : x
  2. Step 2: Convert to fraction form
    3,175.80/4,382.60 = 1,778.56/x
  3. Step 3: Cross multiply
    3,175.80x = 4,382.60 × 1,778.56
  4. Step 4: Simplify right side
    3,175.80x = 7,794,717.06
  5. Step 5: Solve for x
    x = 7,794,717.06/3,175.80
  6. Step 6: Final answer
    x = 2,454.41

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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.