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Finding the Fourth Proportional to 3,382.87, 4,668.79 and 1,891.09

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Solution

The fourth proportional to 3,382.87, 4,668.79 and 1,891.09 is: 2,609.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,382.87 : 4,668.79 = 1,891.09 : x
  2. Step 2: Convert to fraction form
    3,382.87/4,668.79 = 1,891.09/x
  3. Step 3: Cross multiply
    3,382.87x = 4,668.79 × 1,891.09
  4. Step 4: Simplify right side
    3,382.87x = 8,829,102.08
  5. Step 5: Solve for x
    x = 8,829,102.08/3,382.87
  6. Step 6: Final answer
    x = 2,609.95

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1.5x scale

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.