Home / 2,679.96-4,021.38-2,556.12

Finding the Fourth Proportional to 2,679.96, 4,021.38 and 2,556.12

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Solution

The fourth proportional to 2,679.96, 4,021.38 and 2,556.12 is: 3,835.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,679.96 : 4,021.38 = 2,556.12 : x
  2. Step 2: Convert to fraction form
    2,679.96/4,021.38 = 2,556.12/x
  3. Step 3: Cross multiply
    2,679.96x = 4,021.38 × 2,556.12
  4. Step 4: Simplify right side
    2,679.96x = 10,279,129.85
  5. Step 5: Solve for x
    x = 10,279,129.85/2,679.96
  6. Step 6: Final answer
    x = 3,835.55

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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.