Home / 3,934.60-5,429.53-2,165.86

Finding the Fourth Proportional to 3,934.60, 5,429.53 and 2,165.86

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Solution

The fourth proportional to 3,934.60, 5,429.53 and 2,165.86 is: 2,988.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,934.60 : 5,429.53 = 2,165.86 : x
  2. Step 2: Convert to fraction form
    3,934.60/5,429.53 = 2,165.86/x
  3. Step 3: Cross multiply
    3,934.60x = 5,429.53 × 2,165.86
  4. Step 4: Simplify right side
    3,934.60x = 11,759,601.85
  5. Step 5: Solve for x
    x = 11,759,601.85/3,934.60
  6. Step 6: Final answer
    x = 2,988.77

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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.