Home / 2,819.12-4,222.20-2,328.80

Finding the Fourth Proportional to 2,819.12, 4,222.20 and 2,328.80

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Solution

The fourth proportional to 2,819.12, 4,222.20 and 2,328.80 is: 3,487.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,819.12 : 4,222.20 = 2,328.80 : x
  2. Step 2: Convert to fraction form
    2,819.12/4,222.20 = 2,328.80/x
  3. Step 3: Cross multiply
    2,819.12x = 4,222.20 × 2,328.80
  4. Step 4: Simplify right side
    2,819.12x = 9,832,659.36
  5. Step 5: Solve for x
    x = 9,832,659.36/2,819.12
  6. Step 6: Final answer
    x = 3,487.85

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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.