Home / 3,934.67-5,429.79-2,166.26

Finding the Fourth Proportional to 3,934.67, 5,429.79 and 2,166.26

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Solution

The fourth proportional to 3,934.67, 5,429.79 and 2,166.26 is: 2,989.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,934.67 : 5,429.79 = 2,166.26 : x
  2. Step 2: Convert to fraction form
    3,934.67/5,429.79 = 2,166.26/x
  3. Step 3: Cross multiply
    3,934.67x = 5,429.79 × 2,166.26
  4. Step 4: Simplify right side
    3,934.67x = 11,762,309.74
  5. Step 5: Solve for x
    x = 11,762,309.74/3,934.67
  6. Step 6: Final answer
    x = 2,989.41

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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.