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Finding the Fourth Proportional to 7,202.31, 10,800.63 and 2,819.13

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Solution

The fourth proportional to 7,202.31, 10,800.63 and 2,819.13 is: 4,227.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,202.31 : 10,800.63 = 2,819.13 : x
  2. Step 2: Convert to fraction form
    7,202.31/10,800.63 = 2,819.13/x
  3. Step 3: Cross multiply
    7,202.31x = 10,800.63 × 2,819.13
  4. Step 4: Simplify right side
    7,202.31x = 30,448,380.05
  5. Step 5: Solve for x
    x = 30,448,380.05/7,202.31
  6. Step 6: Final answer
    x = 4,227.59

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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.