Home / 3,934.70-5,429.86-2,166.27

Finding the Fourth Proportional to 3,934.70, 5,429.86 and 2,166.27

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Solution

The fourth proportional to 3,934.70, 5,429.86 and 2,166.27 is: 2,989.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,934.70 : 5,429.86 = 2,166.27 : x
  2. Step 2: Convert to fraction form
    3,934.70/5,429.86 = 2,166.27/x
  3. Step 3: Cross multiply
    3,934.70x = 5,429.86 × 2,166.27
  4. Step 4: Simplify right side
    3,934.70x = 11,762,542.82
  5. Step 5: Solve for x
    x = 11,762,542.82/3,934.70
  6. Step 6: Final answer
    x = 2,989.44

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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.