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Finding the Fourth Proportional to 3,859.97, 5,789.03 and 2,215.67

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Solution

The fourth proportional to 3,859.97, 5,789.03 and 2,215.67 is: 3,322.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,859.97 : 5,789.03 = 2,215.67 : x
  2. Step 2: Convert to fraction form
    3,859.97/5,789.03 = 2,215.67/x
  3. Step 3: Cross multiply
    3,859.97x = 5,789.03 × 2,215.67
  4. Step 4: Simplify right side
    3,859.97x = 12,826,540.08
  5. Step 5: Solve for x
    x = 12,826,540.08/3,859.97
  6. Step 6: Final answer
    x = 3,322.97

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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.