Home / 3,121.66-4,682.49-1,272.27

Finding the Fourth Proportional to 3,121.66, 4,682.49 and 1,272.27

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Solution

The fourth proportional to 3,121.66, 4,682.49 and 1,272.27 is: 1,908.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,121.66 : 4,682.49 = 1,272.27 : x
  2. Step 2: Convert to fraction form
    3,121.66/4,682.49 = 1,272.27/x
  3. Step 3: Cross multiply
    3,121.66x = 4,682.49 × 1,272.27
  4. Step 4: Simplify right side
    3,121.66x = 5,957,411.50
  5. Step 5: Solve for x
    x = 5,957,411.50/3,121.66
  6. Step 6: Final answer
    x = 1,908.41

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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.