Home / 2,190.20-3,022.51-1,195.48

Finding the Fourth Proportional to 2,190.20, 3,022.51 and 1,195.48

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Solution

The fourth proportional to 2,190.20, 3,022.51 and 1,195.48 is: 1,649.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,190.20 : 3,022.51 = 1,195.48 : x
  2. Step 2: Convert to fraction form
    2,190.20/3,022.51 = 1,195.48/x
  3. Step 3: Cross multiply
    2,190.20x = 3,022.51 × 1,195.48
  4. Step 4: Simplify right side
    2,190.20x = 3,613,358.97
  5. Step 5: Solve for x
    x = 3,613,358.97/2,190.20
  6. Step 6: Final answer
    x = 1,649.78

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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.