Home / 3,711.11-5,121.23-2,117.66

Finding the Fourth Proportional to 3,711.11, 5,121.23 and 2,117.66

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Solution

The fourth proportional to 3,711.11, 5,121.23 and 2,117.66 is: 2,922.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,711.11 : 5,121.23 = 2,117.66 : x
  2. Step 2: Convert to fraction form
    3,711.11/5,121.23 = 2,117.66/x
  3. Step 3: Cross multiply
    3,711.11x = 5,121.23 × 2,117.66
  4. Step 4: Simplify right side
    3,711.11x = 10,844,987.73
  5. Step 5: Solve for x
    x = 10,844,987.73/3,711.11
  6. Step 6: Final answer
    x = 2,922.31

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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.