Home / 3,221.91-4,829.12-2,637.90

Finding the Fourth Proportional to 3,221.91, 4,829.12 and 2,637.90

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Solution

The fourth proportional to 3,221.91, 4,829.12 and 2,637.90 is: 3,953.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,221.91 : 4,829.12 = 2,637.90 : x
  2. Step 2: Convert to fraction form
    3,221.91/4,829.12 = 2,637.90/x
  3. Step 3: Cross multiply
    3,221.91x = 4,829.12 × 2,637.90
  4. Step 4: Simplify right side
    3,221.91x = 12,738,732.35
  5. Step 5: Solve for x
    x = 12,738,732.35/3,221.91
  6. Step 6: Final answer
    x = 3,953.78

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.