Home / 3,669.80-5,520.90-3,439.76

Finding the Fourth Proportional to 3,669.80, 5,520.90 and 3,439.76

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Solution

The fourth proportional to 3,669.80, 5,520.90 and 3,439.76 is: 5,174.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,669.80 : 5,520.90 = 3,439.76 : x
  2. Step 2: Convert to fraction form
    3,669.80/5,520.90 = 3,439.76/x
  3. Step 3: Cross multiply
    3,669.80x = 5,520.90 × 3,439.76
  4. Step 4: Simplify right side
    3,669.80x = 18,990,570.98
  5. Step 5: Solve for x
    x = 18,990,570.98/3,669.80
  6. Step 6: Final answer
    x = 5,174.82

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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.