Home / 3,982.14-5,495.22-2,189.70

Finding the Fourth Proportional to 3,982.14, 5,495.22 and 2,189.70

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Solution

The fourth proportional to 3,982.14, 5,495.22 and 2,189.70 is: 3,021.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,982.14 : 5,495.22 = 2,189.70 : x
  2. Step 2: Convert to fraction form
    3,982.14/5,495.22 = 2,189.70/x
  3. Step 3: Cross multiply
    3,982.14x = 5,495.22 × 2,189.70
  4. Step 4: Simplify right side
    3,982.14x = 12,032,883.23
  5. Step 5: Solve for x
    x = 12,032,883.23/3,982.14
  6. Step 6: Final answer
    x = 3,021.71

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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.