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Finding the Fourth Proportional to 3,559.91, 4,912.64 and 1,966.65

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Solution

The fourth proportional to 3,559.91, 4,912.64 and 1,966.65 is: 2,713.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,559.91 : 4,912.64 = 1,966.65 : x
  2. Step 2: Convert to fraction form
    3,559.91/4,912.64 = 1,966.65/x
  3. Step 3: Cross multiply
    3,559.91x = 4,912.64 × 1,966.65
  4. Step 4: Simplify right side
    3,559.91x = 9,661,433.62
  5. Step 5: Solve for x
    x = 9,661,433.62/3,559.91
  6. Step 6: Final answer
    x = 2,713.96

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.