Home / 2,273.91-3,138.09-1,279.23

Finding the Fourth Proportional to 2,273.91, 3,138.09 and 1,279.23

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Solution

The fourth proportional to 2,273.91, 3,138.09 and 1,279.23 is: 1,765.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,273.91 : 3,138.09 = 1,279.23 : x
  2. Step 2: Convert to fraction form
    2,273.91/3,138.09 = 1,279.23/x
  3. Step 3: Cross multiply
    2,273.91x = 3,138.09 × 1,279.23
  4. Step 4: Simplify right side
    2,273.91x = 4,014,338.87
  5. Step 5: Solve for x
    x = 4,014,338.87/2,273.91
  6. Step 6: Final answer
    x = 1,765.39

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1.5x scale

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.