Home / 3,868.25-5,338.08-2,189.73

Finding the Fourth Proportional to 3,868.25, 5,338.08 and 2,189.73

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Solution

The fourth proportional to 3,868.25, 5,338.08 and 2,189.73 is: 3,021.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,868.25 : 5,338.08 = 2,189.73 : x
  2. Step 2: Convert to fraction form
    3,868.25/5,338.08 = 2,189.73/x
  3. Step 3: Cross multiply
    3,868.25x = 5,338.08 × 2,189.73
  4. Step 4: Simplify right side
    3,868.25x = 11,688,943.91
  5. Step 5: Solve for x
    x = 11,688,943.91/3,868.25
  6. Step 6: Final answer
    x = 3,021.76

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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.