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Finding the Fourth Proportional to 3,909.75, 5,866.07 and 2,060.79

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Solution

The fourth proportional to 3,909.75, 5,866.07 and 2,060.79 is: 3,091.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,909.75 : 5,866.07 = 2,060.79 : x
  2. Step 2: Convert to fraction form
    3,909.75/5,866.07 = 2,060.79/x
  3. Step 3: Cross multiply
    3,909.75x = 5,866.07 × 2,060.79
  4. Step 4: Simplify right side
    3,909.75x = 12,088,738.40
  5. Step 5: Solve for x
    x = 12,088,738.40/3,909.75
  6. Step 6: Final answer
    x = 3,091.95

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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.