Home / 2,529.90-3,790.17-2,121.66

Finding the Fourth Proportional to 2,529.90, 3,790.17 and 2,121.66

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Solution

The fourth proportional to 2,529.90, 3,790.17 and 2,121.66 is: 3,178.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,529.90 : 3,790.17 = 2,121.66 : x
  2. Step 2: Convert to fraction form
    2,529.90/3,790.17 = 2,121.66/x
  3. Step 3: Cross multiply
    2,529.90x = 3,790.17 × 2,121.66
  4. Step 4: Simplify right side
    2,529.90x = 8,041,452.08
  5. Step 5: Solve for x
    x = 8,041,452.08/2,529.90
  6. Step 6: Final answer
    x = 3,178.57

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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.