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Finding the Fourth Proportional to 3,183.91, 4,394.18 and 1,786.87

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Solution

The fourth proportional to 3,183.91, 4,394.18 and 1,786.87 is: 2,466.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,183.91 : 4,394.18 = 1,786.87 : x
  2. Step 2: Convert to fraction form
    3,183.91/4,394.18 = 1,786.87/x
  3. Step 3: Cross multiply
    3,183.91x = 4,394.18 × 1,786.87
  4. Step 4: Simplify right side
    3,183.91x = 7,851,819.48
  5. Step 5: Solve for x
    x = 7,851,819.48/3,183.91
  6. Step 6: Final answer
    x = 2,466.09

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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.