Home / 5,619.20-8,429.21-2,156.45

Finding the Fourth Proportional to 5,619.20, 8,429.21 and 2,156.45

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Solution

The fourth proportional to 5,619.20, 8,429.21 and 2,156.45 is: 3,234.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,619.20 : 8,429.21 = 2,156.45 : x
  2. Step 2: Convert to fraction form
    5,619.20/8,429.21 = 2,156.45/x
  3. Step 3: Cross multiply
    5,619.20x = 8,429.21 × 2,156.45
  4. Step 4: Simplify right side
    5,619.20x = 18,177,190.98
  5. Step 5: Solve for x
    x = 18,177,190.98/5,619.20
  6. Step 6: Final answer
    x = 3,234.83

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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.