Home / 2,221.29-3,065.34-1,212.95

Finding the Fourth Proportional to 2,221.29, 3,065.34 and 1,212.95

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Solution

The fourth proportional to 2,221.29, 3,065.34 and 1,212.95 is: 1,673.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,221.29 : 3,065.34 = 1,212.95 : x
  2. Step 2: Convert to fraction form
    2,221.29/3,065.34 = 1,212.95/x
  3. Step 3: Cross multiply
    2,221.29x = 3,065.34 × 1,212.95
  4. Step 4: Simplify right side
    2,221.29x = 3,718,104.15
  5. Step 5: Solve for x
    x = 3,718,104.15/2,221.29
  6. Step 6: Final answer
    x = 1,673.85

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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.