Home / 3,934.20-5,429.53-2,166.14

Finding the Fourth Proportional to 3,934.20, 5,429.53 and 2,166.14

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Solution

The fourth proportional to 3,934.20, 5,429.53 and 2,166.14 is: 2,989.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,934.20 : 5,429.53 = 2,166.14 : x
  2. Step 2: Convert to fraction form
    3,934.20/5,429.53 = 2,166.14/x
  3. Step 3: Cross multiply
    3,934.20x = 5,429.53 × 2,166.14
  4. Step 4: Simplify right side
    3,934.20x = 11,761,138.40
  5. Step 5: Solve for x
    x = 11,761,138.40/3,934.20
  6. Step 6: Final answer
    x = 2,989.46

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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.