Home / 3,208.78-4,425.57-1,949.80

Finding the Fourth Proportional to 3,208.78, 4,425.57 and 1,949.80

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Solution

The fourth proportional to 3,208.78, 4,425.57 and 1,949.80 is: 2,689.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,208.78 : 4,425.57 = 1,949.80 : x
  2. Step 2: Convert to fraction form
    3,208.78/4,425.57 = 1,949.80/x
  3. Step 3: Cross multiply
    3,208.78x = 4,425.57 × 1,949.80
  4. Step 4: Simplify right side
    3,208.78x = 8,628,976.39
  5. Step 5: Solve for x
    x = 8,628,976.39/3,208.78
  6. Step 6: Final answer
    x = 2,689.18

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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.