Home / 5,499.87-8,239.16-3,420.70

Finding the Fourth Proportional to 5,499.87, 8,239.16 and 3,420.70

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Solution

The fourth proportional to 5,499.87, 8,239.16 and 3,420.70 is: 5,124.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,499.87 : 8,239.16 = 3,420.70 : x
  2. Step 2: Convert to fraction form
    5,499.87/8,239.16 = 3,420.70/x
  3. Step 3: Cross multiply
    5,499.87x = 8,239.16 × 3,420.70
  4. Step 4: Simplify right side
    5,499.87x = 28,183,694.61
  5. Step 5: Solve for x
    x = 28,183,694.61/5,499.87
  6. Step 6: Final answer
    x = 5,124.43

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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.