Home / 3,934.34-5,429.56-2,165.92

Finding the Fourth Proportional to 3,934.34, 5,429.56 and 2,165.92

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Solution

The fourth proportional to 3,934.34, 5,429.56 and 2,165.92 is: 2,989.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,934.34 : 5,429.56 = 2,165.92 : x
  2. Step 2: Convert to fraction form
    3,934.34/5,429.56 = 2,165.92/x
  3. Step 3: Cross multiply
    3,934.34x = 5,429.56 × 2,165.92
  4. Step 4: Simplify right side
    3,934.34x = 11,759,992.60
  5. Step 5: Solve for x
    x = 11,759,992.60/3,934.34
  6. Step 6: Final answer
    x = 2,989.06

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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.