Home / 5,221.42-7,205.56-2,863.61

Finding the Fourth Proportional to 5,221.42, 7,205.56 and 2,863.61

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Solution

The fourth proportional to 5,221.42, 7,205.56 and 2,863.61 is: 3,951.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,221.42 : 7,205.56 = 2,863.61 : x
  2. Step 2: Convert to fraction form
    5,221.42/7,205.56 = 2,863.61/x
  3. Step 3: Cross multiply
    5,221.42x = 7,205.56 × 2,863.61
  4. Step 4: Simplify right side
    5,221.42x = 20,633,913.67
  5. Step 5: Solve for x
    x = 20,633,913.67/5,221.42
  6. Step 6: Final answer
    x = 3,951.78

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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.