Home / 3,800.20-5,243.72-2,228.80

Finding the Fourth Proportional to 3,800.20, 5,243.72 and 2,228.80

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Solution

The fourth proportional to 3,800.20, 5,243.72 and 2,228.80 is: 3,075.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,800.20 : 5,243.72 = 2,228.80 : x
  2. Step 2: Convert to fraction form
    3,800.20/5,243.72 = 2,228.80/x
  3. Step 3: Cross multiply
    3,800.20x = 5,243.72 × 2,228.80
  4. Step 4: Simplify right side
    3,800.20x = 11,687,203.14
  5. Step 5: Solve for x
    x = 11,687,203.14/3,800.20
  6. Step 6: Final answer
    x = 3,075.42

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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.