Home / 2,620.96-3,613.26-2,221.02

Finding the Fourth Proportional to 2,620.96, 3,613.26 and 2,221.02

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Solution

The fourth proportional to 2,620.96, 3,613.26 and 2,221.02 is: 3,061.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,620.96 : 3,613.26 = 2,221.02 : x
  2. Step 2: Convert to fraction form
    2,620.96/3,613.26 = 2,221.02/x
  3. Step 3: Cross multiply
    2,620.96x = 3,613.26 × 2,221.02
  4. Step 4: Simplify right side
    2,620.96x = 8,025,118.56
  5. Step 5: Solve for x
    x = 8,025,118.56/2,620.96
  6. Step 6: Final answer
    x = 3,061.90

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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.