Home / 3,581.12-4,942.25-1,987.92

Finding the Fourth Proportional to 3,581.12, 4,942.25 and 1,987.92

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Solution

The fourth proportional to 3,581.12, 4,942.25 and 1,987.92 is: 2,743.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,581.12 : 4,942.25 = 1,987.92 : x
  2. Step 2: Convert to fraction form
    3,581.12/4,942.25 = 1,987.92/x
  3. Step 3: Cross multiply
    3,581.12x = 4,942.25 × 1,987.92
  4. Step 4: Simplify right side
    3,581.12x = 9,824,797.62
  5. Step 5: Solve for x
    x = 9,824,797.62/3,581.12
  6. Step 6: Final answer
    x = 2,743.50

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Double scale
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Similar ratio
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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.