Home / 2,190.10-3,022.32-1,195.38

Finding the Fourth Proportional to 2,190.10, 3,022.32 and 1,195.38

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Solution

The fourth proportional to 2,190.10, 3,022.32 and 1,195.38 is: 1,649.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,190.10 : 3,022.32 = 1,195.38 : x
  2. Step 2: Convert to fraction form
    2,190.10/3,022.32 = 1,195.38/x
  3. Step 3: Cross multiply
    2,190.10x = 3,022.32 × 1,195.38
  4. Step 4: Simplify right side
    2,190.10x = 3,612,820.88
  5. Step 5: Solve for x
    x = 3,612,820.88/2,190.10
  6. Step 6: Final answer
    x = 1,649.61

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Half scale
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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.