Home / 2,190.20-3,288.38-2,091.02

Finding the Fourth Proportional to 2,190.20, 3,288.38 and 2,091.02

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Solution

The fourth proportional to 2,190.20, 3,288.38 and 2,091.02 is: 3,139.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,190.20 : 3,288.38 = 2,091.02 : x
  2. Step 2: Convert to fraction form
    2,190.20/3,288.38 = 2,091.02/x
  3. Step 3: Cross multiply
    2,190.20x = 3,288.38 × 2,091.02
  4. Step 4: Simplify right side
    2,190.20x = 6,876,041.45
  5. Step 5: Solve for x
    x = 6,876,041.45/2,190.20
  6. Step 6: Final answer
    x = 3,139.46

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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.