Home / 2,786.31-4,181.45-1,226.70

Finding the Fourth Proportional to 2,786.31, 4,181.45 and 1,226.70

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Solution

The fourth proportional to 2,786.31, 4,181.45 and 1,226.70 is: 1,840.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,786.31 : 4,181.45 = 1,226.70 : x
  2. Step 2: Convert to fraction form
    2,786.31/4,181.45 = 1,226.70/x
  3. Step 3: Cross multiply
    2,786.31x = 4,181.45 × 1,226.70
  4. Step 4: Simplify right side
    2,786.31x = 5,129,378.58
  5. Step 5: Solve for x
    x = 5,129,378.58/2,786.31
  6. Step 6: Final answer
    x = 1,840.92

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.