Home / 2,819.91-3,891.93-1,685.51

Finding the Fourth Proportional to 2,819.91, 3,891.93 and 1,685.51

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Solution

The fourth proportional to 2,819.91, 3,891.93 and 1,685.51 is: 2,326.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,819.91 : 3,891.93 = 1,685.51 : x
  2. Step 2: Convert to fraction form
    2,819.91/3,891.93 = 1,685.51/x
  3. Step 3: Cross multiply
    2,819.91x = 3,891.93 × 1,685.51
  4. Step 4: Simplify right side
    2,819.91x = 6,559,867.47
  5. Step 5: Solve for x
    x = 6,559,867.47/2,819.91
  6. Step 6: Final answer
    x = 2,326.27

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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.