Home / 3,934.36-5,429.42-2,165.96

Finding the Fourth Proportional to 3,934.36, 5,429.42 and 2,165.96

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Solution

The fourth proportional to 3,934.36, 5,429.42 and 2,165.96 is: 2,989.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,934.36 : 5,429.42 = 2,165.96 : x
  2. Step 2: Convert to fraction form
    3,934.36/5,429.42 = 2,165.96/x
  3. Step 3: Cross multiply
    3,934.36x = 5,429.42 × 2,165.96
  4. Step 4: Simplify right side
    3,934.36x = 11,759,879.40
  5. Step 5: Solve for x
    x = 11,759,879.40/3,934.36
  6. Step 6: Final answer
    x = 2,989.02

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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.