Home / 3,934.62-5,429.81-2,166.29

Finding the Fourth Proportional to 3,934.62, 5,429.81 and 2,166.29

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Solution

The fourth proportional to 3,934.62, 5,429.81 and 2,166.29 is: 2,989.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,934.62 : 5,429.81 = 2,166.29 : x
  2. Step 2: Convert to fraction form
    3,934.62/5,429.81 = 2,166.29/x
  3. Step 3: Cross multiply
    3,934.62x = 5,429.81 × 2,166.29
  4. Step 4: Simplify right side
    3,934.62x = 11,762,505.12
  5. Step 5: Solve for x
    x = 11,762,505.12/3,934.62
  6. Step 6: Final answer
    x = 2,989.49

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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.