Home / 2,190.62-3,281.11-1,811.07

Finding the Fourth Proportional to 2,190.62, 3,281.11 and 1,811.07

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Solution

The fourth proportional to 2,190.62, 3,281.11 and 1,811.07 is: 2,712.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,190.62 : 3,281.11 = 1,811.07 : x
  2. Step 2: Convert to fraction form
    2,190.62/3,281.11 = 1,811.07/x
  3. Step 3: Cross multiply
    2,190.62x = 3,281.11 × 1,811.07
  4. Step 4: Simplify right side
    2,190.62x = 5,942,315.36
  5. Step 5: Solve for x
    x = 5,942,315.36/2,190.62
  6. Step 6: Final answer
    x = 2,712.61

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.