Home / 3,711.11-5,127.84-2,920.71

Finding the Fourth Proportional to 3,711.11, 5,127.84 and 2,920.71

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Solution

The fourth proportional to 3,711.11, 5,127.84 and 2,920.71 is: 4,035.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,711.11 : 5,127.84 = 2,920.71 : x
  2. Step 2: Convert to fraction form
    3,711.11/5,127.84 = 2,920.71/x
  3. Step 3: Cross multiply
    3,711.11x = 5,127.84 × 2,920.71
  4. Step 4: Simplify right side
    3,711.11x = 14,976,933.57
  5. Step 5: Solve for x
    x = 14,976,933.57/3,711.11
  6. Step 6: Final answer
    x = 4,035.71

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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.