Home / 3,234.94-4,461.51-1,990.78

Finding the Fourth Proportional to 3,234.94, 4,461.51 and 1,990.78

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Solution

The fourth proportional to 3,234.94, 4,461.51 and 1,990.78 is: 2,745.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,234.94 : 4,461.51 = 1,990.78 : x
  2. Step 2: Convert to fraction form
    3,234.94/4,461.51 = 1,990.78/x
  3. Step 3: Cross multiply
    3,234.94x = 4,461.51 × 1,990.78
  4. Step 4: Simplify right side
    3,234.94x = 8,881,884.88
  5. Step 5: Solve for x
    x = 8,881,884.88/3,234.94
  6. Step 6: Final answer
    x = 2,745.61

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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.