Home / 2,819.98-3,891.68-1,874.14

Finding the Fourth Proportional to 2,819.98, 3,891.68 and 1,874.14

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Solution

The fourth proportional to 2,819.98, 3,891.68 and 1,874.14 is: 2,586.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,819.98 : 3,891.68 = 1,874.14 : x
  2. Step 2: Convert to fraction form
    2,819.98/3,891.68 = 1,874.14/x
  3. Step 3: Cross multiply
    2,819.98x = 3,891.68 × 1,874.14
  4. Step 4: Simplify right side
    2,819.98x = 7,293,553.16
  5. Step 5: Solve for x
    x = 7,293,553.16/2,819.98
  6. Step 6: Final answer
    x = 2,586.38

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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.