Home / 3,161.28-4,363.20-2,221.44

Finding the Fourth Proportional to 3,161.28, 4,363.20 and 2,221.44

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Solution

The fourth proportional to 3,161.28, 4,363.20 and 2,221.44 is: 3,066.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,161.28 : 4,363.20 = 2,221.44 : x
  2. Step 2: Convert to fraction form
    3,161.28/4,363.20 = 2,221.44/x
  3. Step 3: Cross multiply
    3,161.28x = 4,363.20 × 2,221.44
  4. Step 4: Simplify right side
    3,161.28x = 9,692,587.01
  5. Step 5: Solve for x
    x = 9,692,587.01/3,161.28
  6. Step 6: Final answer
    x = 3,066.03

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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.