Home / 2,189.82-3,021.97-1,195.13

Finding the Fourth Proportional to 2,189.82, 3,021.97 and 1,195.13

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Solution

The fourth proportional to 2,189.82, 3,021.97 and 1,195.13 is: 1,649.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,189.82 : 3,021.97 = 1,195.13 : x
  2. Step 2: Convert to fraction form
    2,189.82/3,021.97 = 1,195.13/x
  3. Step 3: Cross multiply
    2,189.82x = 3,021.97 × 1,195.13
  4. Step 4: Simplify right side
    2,189.82x = 3,611,628.91
  5. Step 5: Solve for x
    x = 3,611,628.91/2,189.82
  6. Step 6: Final answer
    x = 1,649.28

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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.