Home / 2,190.92-3,288.13-1,151.54

Finding the Fourth Proportional to 2,190.92, 3,288.13 and 1,151.54

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Solution

The fourth proportional to 2,190.92, 3,288.13 and 1,151.54 is: 1,728.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,190.92 : 3,288.13 = 1,151.54 : x
  2. Step 2: Convert to fraction form
    2,190.92/3,288.13 = 1,151.54/x
  3. Step 3: Cross multiply
    2,190.92x = 3,288.13 × 1,151.54
  4. Step 4: Simplify right side
    2,190.92x = 3,786,393.90
  5. Step 5: Solve for x
    x = 3,786,393.90/2,190.92
  6. Step 6: Final answer
    x = 1,728.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.