Home / 3,239.72-4,469.40-1,980.83

Finding the Fourth Proportional to 3,239.72, 4,469.40 and 1,980.83

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Solution

The fourth proportional to 3,239.72, 4,469.40 and 1,980.83 is: 2,732.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,239.72 : 4,469.40 = 1,980.83 : x
  2. Step 2: Convert to fraction form
    3,239.72/4,469.40 = 1,980.83/x
  3. Step 3: Cross multiply
    3,239.72x = 4,469.40 × 1,980.83
  4. Step 4: Simplify right side
    3,239.72x = 8,853,102.97
  5. Step 5: Solve for x
    x = 8,853,102.97/3,239.72
  6. Step 6: Final answer
    x = 2,732.68

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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.