Home / 5,219.80-7,202.82-3,123.88

Finding the Fourth Proportional to 5,219.80, 7,202.82 and 3,123.88

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Solution

The fourth proportional to 5,219.80, 7,202.82 and 3,123.88 is: 4,310.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,219.80 : 7,202.82 = 3,123.88 : x
  2. Step 2: Convert to fraction form
    5,219.80/7,202.82 = 3,123.88/x
  3. Step 3: Cross multiply
    5,219.80x = 7,202.82 × 3,123.88
  4. Step 4: Simplify right side
    5,219.80x = 22,500,745.34
  5. Step 5: Solve for x
    x = 22,500,745.34/5,219.80
  6. Step 6: Final answer
    x = 4,310.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.