Home / 3,682.80-5,081.70-2,190.69

Finding the Fourth Proportional to 3,682.80, 5,081.70 and 2,190.69

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Solution

The fourth proportional to 3,682.80, 5,081.70 and 2,190.69 is: 3,022.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,682.80 : 5,081.70 = 2,190.69 : x
  2. Step 2: Convert to fraction form
    3,682.80/5,081.70 = 2,190.69/x
  3. Step 3: Cross multiply
    3,682.80x = 5,081.70 × 2,190.69
  4. Step 4: Simplify right side
    3,682.80x = 11,132,429.37
  5. Step 5: Solve for x
    x = 11,132,429.37/3,682.80
  6. Step 6: Final answer
    x = 3,022.82

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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.