Home / 2,154.82-3,234.66-1,279.22

Finding the Fourth Proportional to 2,154.82, 3,234.66 and 1,279.22

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Solution

The fourth proportional to 2,154.82, 3,234.66 and 1,279.22 is: 1,920.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,154.82 : 3,234.66 = 1,279.22 : x
  2. Step 2: Convert to fraction form
    2,154.82/3,234.66 = 1,279.22/x
  3. Step 3: Cross multiply
    2,154.82x = 3,234.66 × 1,279.22
  4. Step 4: Simplify right side
    2,154.82x = 4,137,841.77
  5. Step 5: Solve for x
    x = 4,137,841.77/2,154.82
  6. Step 6: Final answer
    x = 1,920.27

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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.