Home / 1,906.92-2,861.34-1,398.12

Finding the Fourth Proportional to 1,906.92, 2,861.34 and 1,398.12

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Solution

The fourth proportional to 1,906.92, 2,861.34 and 1,398.12 is: 2,097.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,906.92 : 2,861.34 = 1,398.12 : x
  2. Step 2: Convert to fraction form
    1,906.92/2,861.34 = 1,398.12/x
  3. Step 3: Cross multiply
    1,906.92x = 2,861.34 × 1,398.12
  4. Step 4: Simplify right side
    1,906.92x = 4,000,496.68
  5. Step 5: Solve for x
    x = 4,000,496.68/1,906.92
  6. Step 6: Final answer
    x = 2,097.88

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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.