Home / 3,194.57-4,408.40-1,778.21

Finding the Fourth Proportional to 3,194.57, 4,408.40 and 1,778.21

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Solution

The fourth proportional to 3,194.57, 4,408.40 and 1,778.21 is: 2,453.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,194.57 : 4,408.40 = 1,778.21 : x
  2. Step 2: Convert to fraction form
    3,194.57/4,408.40 = 1,778.21/x
  3. Step 3: Cross multiply
    3,194.57x = 4,408.40 × 1,778.21
  4. Step 4: Simplify right side
    3,194.57x = 7,839,052.07
  5. Step 5: Solve for x
    x = 7,839,052.07/3,194.57
  6. Step 6: Final answer
    x = 2,453.87

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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.