Home / 2,856.41-4,286.78-1,214.11

Finding the Fourth Proportional to 2,856.41, 4,286.78 and 1,214.11

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Solution

The fourth proportional to 2,856.41, 4,286.78 and 1,214.11 is: 1,822.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,856.41 : 4,286.78 = 1,214.11 : x
  2. Step 2: Convert to fraction form
    2,856.41/4,286.78 = 1,214.11/x
  3. Step 3: Cross multiply
    2,856.41x = 4,286.78 × 1,214.11
  4. Step 4: Simplify right side
    2,856.41x = 5,204,622.47
  5. Step 5: Solve for x
    x = 5,204,622.47/2,856.41
  6. Step 6: Final answer
    x = 1,822.09

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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.