Home / 3,982.28-5,495.18-2,189.39

Finding the Fourth Proportional to 3,982.28, 5,495.18 and 2,189.39

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Solution

The fourth proportional to 3,982.28, 5,495.18 and 2,189.39 is: 3,021.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,982.28 : 5,495.18 = 2,189.39 : x
  2. Step 2: Convert to fraction form
    3,982.28/5,495.18 = 2,189.39/x
  3. Step 3: Cross multiply
    3,982.28x = 5,495.18 × 2,189.39
  4. Step 4: Simplify right side
    3,982.28x = 12,031,101.59
  5. Step 5: Solve for x
    x = 12,031,101.59/3,982.28
  6. Step 6: Final answer
    x = 3,021.16

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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.