Home / 2,856.20-4,284.74-1,212.75

Finding the Fourth Proportional to 2,856.20, 4,284.74 and 1,212.75

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Solution

The fourth proportional to 2,856.20, 4,284.74 and 1,212.75 is: 1,819.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,856.20 : 4,284.74 = 1,212.75 : x
  2. Step 2: Convert to fraction form
    2,856.20/4,284.74 = 1,212.75/x
  3. Step 3: Cross multiply
    2,856.20x = 4,284.74 × 1,212.75
  4. Step 4: Simplify right side
    2,856.20x = 5,196,321.47
  5. Step 5: Solve for x
    x = 5,196,321.47/2,856.20
  6. Step 6: Final answer
    x = 1,819.32

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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.