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Finding the Fourth Proportional to 1,861.43, 2,581.09 and 1,799.15

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Solution

The fourth proportional to 1,861.43, 2,581.09 and 1,799.15 is: 2,494.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,861.43 : 2,581.09 = 1,799.15 : x
  2. Step 2: Convert to fraction form
    1,861.43/2,581.09 = 1,799.15/x
  3. Step 3: Cross multiply
    1,861.43x = 2,581.09 × 1,799.15
  4. Step 4: Simplify right side
    1,861.43x = 4,643,760.93
  5. Step 5: Solve for x
    x = 4,643,760.93/1,861.43
  6. Step 6: Final answer
    x = 2,494.73

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.