Home / 3,212.82-4,434.21-2,688.66

Finding the Fourth Proportional to 3,212.82, 4,434.21 and 2,688.66

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Solution

The fourth proportional to 3,212.82, 4,434.21 and 2,688.66 is: 3,710.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,212.82 : 4,434.21 = 2,688.66 : x
  2. Step 2: Convert to fraction form
    3,212.82/4,434.21 = 2,688.66/x
  3. Step 3: Cross multiply
    3,212.82x = 4,434.21 × 2,688.66
  4. Step 4: Simplify right side
    3,212.82x = 11,922,083.06
  5. Step 5: Solve for x
    x = 11,922,083.06/3,212.82
  6. Step 6: Final answer
    x = 3,710.78

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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.