Home / 3,906.45-5,391.38-2,228.22

Finding the Fourth Proportional to 3,906.45, 5,391.38 and 2,228.22

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Solution

The fourth proportional to 3,906.45, 5,391.38 and 2,228.22 is: 3,075.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,906.45 : 5,391.38 = 2,228.22 : x
  2. Step 2: Convert to fraction form
    3,906.45/5,391.38 = 2,228.22/x
  3. Step 3: Cross multiply
    3,906.45x = 5,391.38 × 2,228.22
  4. Step 4: Simplify right side
    3,906.45x = 12,013,186.31
  5. Step 5: Solve for x
    x = 12,013,186.31/3,906.45
  6. Step 6: Final answer
    x = 3,075.22

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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.