Home / 4,819.78-7,229.40-2,221.30

Finding the Fourth Proportional to 4,819.78, 7,229.40 and 2,221.30

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Solution

The fourth proportional to 4,819.78, 7,229.40 and 2,221.30 is: 3,331.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,819.78 : 7,229.40 = 2,221.30 : x
  2. Step 2: Convert to fraction form
    4,819.78/7,229.40 = 2,221.30/x
  3. Step 3: Cross multiply
    4,819.78x = 7,229.40 × 2,221.30
  4. Step 4: Simplify right side
    4,819.78x = 16,058,666.22
  5. Step 5: Solve for x
    x = 16,058,666.22/4,819.78
  6. Step 6: Final answer
    x = 3,331.83

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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.