Home / 3,183.78-4,393.62-1,786.56

Finding the Fourth Proportional to 3,183.78, 4,393.62 and 1,786.56

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Solution

The fourth proportional to 3,183.78, 4,393.62 and 1,786.56 is: 2,465.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,183.78 : 4,393.62 = 1,786.56 : x
  2. Step 2: Convert to fraction form
    3,183.78/4,393.62 = 1,786.56/x
  3. Step 3: Cross multiply
    3,183.78x = 4,393.62 × 1,786.56
  4. Step 4: Simplify right side
    3,183.78x = 7,849,465.75
  5. Step 5: Solve for x
    x = 7,849,465.75/3,183.78
  6. Step 6: Final answer
    x = 2,465.45

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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.