Home / 2,856.11-4,284.75-1,212.65

Finding the Fourth Proportional to 2,856.11, 4,284.75 and 1,212.65

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Solution

The fourth proportional to 2,856.11, 4,284.75 and 1,212.65 is: 1,819.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,856.11 : 4,284.75 = 1,212.65 : x
  2. Step 2: Convert to fraction form
    2,856.11/4,284.75 = 1,212.65/x
  3. Step 3: Cross multiply
    2,856.11x = 4,284.75 × 1,212.65
  4. Step 4: Simplify right side
    2,856.11x = 5,195,902.09
  5. Step 5: Solve for x
    x = 5,195,902.09/2,856.11
  6. Step 6: Final answer
    x = 1,819.22

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1.5x scale

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.