Home / 2,819.30-3,891.71-1,771.16

Finding the Fourth Proportional to 2,819.30, 3,891.71 and 1,771.16

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Solution

The fourth proportional to 2,819.30, 3,891.71 and 1,771.16 is: 2,444.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,819.30 : 3,891.71 = 1,771.16 : x
  2. Step 2: Convert to fraction form
    2,819.30/3,891.71 = 1,771.16/x
  3. Step 3: Cross multiply
    2,819.30x = 3,891.71 × 1,771.16
  4. Step 4: Simplify right side
    2,819.30x = 6,892,826.05
  5. Step 5: Solve for x
    x = 6,892,826.05/2,819.30
  6. Step 6: Final answer
    x = 2,444.88

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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.