Home / 3,175.64-4,382.14-1,778.20

Finding the Fourth Proportional to 3,175.64, 4,382.14 and 1,778.20

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Solution

The fourth proportional to 3,175.64, 4,382.14 and 1,778.20 is: 2,453.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,175.64 : 4,382.14 = 1,778.20 : x
  2. Step 2: Convert to fraction form
    3,175.64/4,382.14 = 1,778.20/x
  3. Step 3: Cross multiply
    3,175.64x = 4,382.14 × 1,778.20
  4. Step 4: Simplify right side
    3,175.64x = 7,792,321.35
  5. Step 5: Solve for x
    x = 7,792,321.35/3,175.64
  6. Step 6: Final answer
    x = 2,453.78

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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.