Home / 2,190.62-3,281.36-1,091.64

Finding the Fourth Proportional to 2,190.62, 3,281.36 and 1,091.64

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Solution

The fourth proportional to 2,190.62, 3,281.36 and 1,091.64 is: 1,635.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,190.62 : 3,281.36 = 1,091.64 : x
  2. Step 2: Convert to fraction form
    2,190.62/3,281.36 = 1,091.64/x
  3. Step 3: Cross multiply
    2,190.62x = 3,281.36 × 1,091.64
  4. Step 4: Simplify right side
    2,190.62x = 3,582,058.37
  5. Step 5: Solve for x
    x = 3,582,058.37/2,190.62
  6. Step 6: Final answer
    x = 1,635.18

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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.