Home / 3,711.57-5,121.84-2,218.61

Finding the Fourth Proportional to 3,711.57, 5,121.84 and 2,218.61

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Solution

The fourth proportional to 3,711.57, 5,121.84 and 2,218.61 is: 3,061.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,711.57 : 5,121.84 = 2,218.61 : x
  2. Step 2: Convert to fraction form
    3,711.57/5,121.84 = 2,218.61/x
  3. Step 3: Cross multiply
    3,711.57x = 5,121.84 × 2,218.61
  4. Step 4: Simplify right side
    3,711.57x = 11,363,339.83
  5. Step 5: Solve for x
    x = 11,363,339.83/3,711.57
  6. Step 6: Final answer
    x = 3,061.60

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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.