Home / 3,900.46-5,383.05-2,221.96

Finding the Fourth Proportional to 3,900.46, 5,383.05 and 2,221.96

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Solution

The fourth proportional to 3,900.46, 5,383.05 and 2,221.96 is: 3,066.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,900.46 : 5,383.05 = 2,221.96 : x
  2. Step 2: Convert to fraction form
    3,900.46/5,383.05 = 2,221.96/x
  3. Step 3: Cross multiply
    3,900.46x = 5,383.05 × 2,221.96
  4. Step 4: Simplify right side
    3,900.46x = 11,960,921.78
  5. Step 5: Solve for x
    x = 11,960,921.78/3,900.46
  6. Step 6: Final answer
    x = 3,066.54

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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.