Home / 2,131.11-3,192.66-1,786.68

Finding the Fourth Proportional to 2,131.11, 3,192.66 and 1,786.68

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Solution

The fourth proportional to 2,131.11, 3,192.66 and 1,786.68 is: 2,676.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,131.11 : 3,192.66 = 1,786.68 : x
  2. Step 2: Convert to fraction form
    2,131.11/3,192.66 = 1,786.68/x
  3. Step 3: Cross multiply
    2,131.11x = 3,192.66 × 1,786.68
  4. Step 4: Simplify right side
    2,131.11x = 5,704,261.77
  5. Step 5: Solve for x
    x = 5,704,261.77/2,131.11
  6. Step 6: Final answer
    x = 2,676.66

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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.