Home / 1,651.82-2,279.16-1,121.11

Finding the Fourth Proportional to 1,651.82, 2,279.16 and 1,121.11

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Solution

The fourth proportional to 1,651.82, 2,279.16 and 1,121.11 is: 1,546.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,651.82 : 2,279.16 = 1,121.11 : x
  2. Step 2: Convert to fraction form
    1,651.82/2,279.16 = 1,121.11/x
  3. Step 3: Cross multiply
    1,651.82x = 2,279.16 × 1,121.11
  4. Step 4: Simplify right side
    1,651.82x = 2,555,183.37
  5. Step 5: Solve for x
    x = 2,555,183.37/1,651.82
  6. Step 6: Final answer
    x = 1,546.89

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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.