Home / 3,620.72-5,427.74-1,279.44

Finding the Fourth Proportional to 3,620.72, 5,427.74 and 1,279.44

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Solution

The fourth proportional to 3,620.72, 5,427.74 and 1,279.44 is: 1,917.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,620.72 : 5,427.74 = 1,279.44 : x
  2. Step 2: Convert to fraction form
    3,620.72/5,427.74 = 1,279.44/x
  3. Step 3: Cross multiply
    3,620.72x = 5,427.74 × 1,279.44
  4. Step 4: Simplify right side
    3,620.72x = 6,944,467.67
  5. Step 5: Solve for x
    x = 6,944,467.67/3,620.72
  6. Step 6: Final answer
    x = 1,917.98

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1.5x scale

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.