Home / 2,819.39-3,891.02-1,640.43

Finding the Fourth Proportional to 2,819.39, 3,891.02 and 1,640.43

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Solution

The fourth proportional to 2,819.39, 3,891.02 and 1,640.43 is: 2,263.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,819.39 : 3,891.02 = 1,640.43 : x
  2. Step 2: Convert to fraction form
    2,819.39/3,891.02 = 1,640.43/x
  3. Step 3: Cross multiply
    2,819.39x = 3,891.02 × 1,640.43
  4. Step 4: Simplify right side
    2,819.39x = 6,382,937.74
  5. Step 5: Solve for x
    x = 6,382,937.74/2,819.39
  6. Step 6: Final answer
    x = 2,263.95

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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.