Home / 3,218.70-4,833.45-2,127.90

Finding the Fourth Proportional to 3,218.70, 4,833.45 and 2,127.90

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Solution

The fourth proportional to 3,218.70, 4,833.45 and 2,127.90 is: 3,195.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,218.70 : 4,833.45 = 2,127.90 : x
  2. Step 2: Convert to fraction form
    3,218.70/4,833.45 = 2,127.90/x
  3. Step 3: Cross multiply
    3,218.70x = 4,833.45 × 2,127.90
  4. Step 4: Simplify right side
    3,218.70x = 10,285,098.26
  5. Step 5: Solve for x
    x = 10,285,098.26/3,218.70
  6. Step 6: Final answer
    x = 3,195.42

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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.