Home / 5,190.21-7,161.82-2,951.61

Finding the Fourth Proportional to 5,190.21, 7,161.82 and 2,951.61

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Solution

The fourth proportional to 5,190.21, 7,161.82 and 2,951.61 is: 4,072.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,190.21 : 7,161.82 = 2,951.61 : x
  2. Step 2: Convert to fraction form
    5,190.21/7,161.82 = 2,951.61/x
  3. Step 3: Cross multiply
    5,190.21x = 7,161.82 × 2,951.61
  4. Step 4: Simplify right side
    5,190.21x = 21,138,865.29
  5. Step 5: Solve for x
    x = 21,138,865.29/5,190.21
  6. Step 6: Final answer
    x = 4,072.83

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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.