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Finding the Fourth Proportional to 3,861.81, 5,793.02 and 1,521.65

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Solution

The fourth proportional to 3,861.81, 5,793.02 and 1,521.65 is: 2,282.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,861.81 : 5,793.02 = 1,521.65 : x
  2. Step 2: Convert to fraction form
    3,861.81/5,793.02 = 1,521.65/x
  3. Step 3: Cross multiply
    3,861.81x = 5,793.02 × 1,521.65
  4. Step 4: Simplify right side
    3,861.81x = 8,814,961.46
  5. Step 5: Solve for x
    x = 8,814,961.46/3,861.81
  6. Step 6: Final answer
    x = 2,282.60

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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.