Home / 3,868.32-5,338.24-2,189.70

Finding the Fourth Proportional to 3,868.32, 5,338.24 and 2,189.70

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Solution

The fourth proportional to 3,868.32, 5,338.24 and 2,189.70 is: 3,021.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,868.32 : 5,338.24 = 2,189.70 : x
  2. Step 2: Convert to fraction form
    3,868.32/5,338.24 = 2,189.70/x
  3. Step 3: Cross multiply
    3,868.32x = 5,338.24 × 2,189.70
  4. Step 4: Simplify right side
    3,868.32x = 11,689,144.13
  5. Step 5: Solve for x
    x = 11,689,144.13/3,868.32
  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.