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Finding the Fourth Proportional to 4,999.20, 7,500.60 and 4,819.20

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Solution

The fourth proportional to 4,999.20, 7,500.60 and 4,819.20 is: 7,230.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,999.20 : 7,500.60 = 4,819.20 : x
  2. Step 2: Convert to fraction form
    4,999.20/7,500.60 = 4,819.20/x
  3. Step 3: Cross multiply
    4,999.20x = 7,500.60 × 4,819.20
  4. Step 4: Simplify right side
    4,999.20x = 36,146,891.52
  5. Step 5: Solve for x
    x = 36,146,891.52/4,999.20
  6. Step 6: Final answer
    x = 7,230.54

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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.