Home / 3,221.43-4,441.39-2,742.45

Finding the Fourth Proportional to 3,221.43, 4,441.39 and 2,742.45

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Solution

The fourth proportional to 3,221.43, 4,441.39 and 2,742.45 is: 3,781.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,221.43 : 4,441.39 = 2,742.45 : x
  2. Step 2: Convert to fraction form
    3,221.43/4,441.39 = 2,742.45/x
  3. Step 3: Cross multiply
    3,221.43x = 4,441.39 × 2,742.45
  4. Step 4: Simplify right side
    3,221.43x = 12,180,290.01
  5. Step 5: Solve for x
    x = 12,180,290.01/3,221.43
  6. Step 6: Final answer
    x = 3,781.02

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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.