Home / 2,770.78-3,823.68-1,511.83

Finding the Fourth Proportional to 2,770.78, 3,823.68 and 1,511.83

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Solution

The fourth proportional to 2,770.78, 3,823.68 and 1,511.83 is: 2,086.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,770.78 : 3,823.68 = 1,511.83 : x
  2. Step 2: Convert to fraction form
    2,770.78/3,823.68 = 1,511.83/x
  3. Step 3: Cross multiply
    2,770.78x = 3,823.68 × 1,511.83
  4. Step 4: Simplify right side
    2,770.78x = 5,780,754.13
  5. Step 5: Solve for x
    x = 5,780,754.13/2,770.78
  6. Step 6: Final answer
    x = 2,086.33

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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.