Home / 3,868.36-5,338.17-2,189.77

Finding the Fourth Proportional to 3,868.36, 5,338.17 and 2,189.77

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Solution

The fourth proportional to 3,868.36, 5,338.17 and 2,189.77 is: 3,021.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,868.36 : 5,338.17 = 2,189.77 : x
  2. Step 2: Convert to fraction form
    3,868.36/5,338.17 = 2,189.77/x
  3. Step 3: Cross multiply
    3,868.36x = 5,338.17 × 2,189.77
  4. Step 4: Simplify right side
    3,868.36x = 11,689,351.18
  5. Step 5: Solve for x
    x = 11,689,351.18/3,868.36
  6. Step 6: Final answer
    x = 3,021.79

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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.