Home / 3,906.56-5,390.97-2,228.06

Finding the Fourth Proportional to 3,906.56, 5,390.97 and 2,228.06

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Solution

The fourth proportional to 3,906.56, 5,390.97 and 2,228.06 is: 3,074.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,906.56 : 5,390.97 = 2,228.06 : x
  2. Step 2: Convert to fraction form
    3,906.56/5,390.97 = 2,228.06/x
  3. Step 3: Cross multiply
    3,906.56x = 5,390.97 × 2,228.06
  4. Step 4: Simplify right side
    3,906.56x = 12,011,377.66
  5. Step 5: Solve for x
    x = 12,011,377.66/3,906.56
  6. Step 6: Final answer
    x = 3,074.67

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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.