Home / 3,186.83-4,395.84-2,190.38

Finding the Fourth Proportional to 3,186.83, 4,395.84 and 2,190.38

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Solution

The fourth proportional to 3,186.83, 4,395.84 and 2,190.38 is: 3,021.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,186.83 : 4,395.84 = 2,190.38 : x
  2. Step 2: Convert to fraction form
    3,186.83/4,395.84 = 2,190.38/x
  3. Step 3: Cross multiply
    3,186.83x = 4,395.84 × 2,190.38
  4. Step 4: Simplify right side
    3,186.83x = 9,628,559.92
  5. Step 5: Solve for x
    x = 9,628,559.92/3,186.83
  6. Step 6: Final answer
    x = 3,021.36

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Half scale
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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.