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Finding the Fourth Proportional to 3,324.43, 4,990.29 and 1,866.43

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Solution

The fourth proportional to 3,324.43, 4,990.29 and 1,866.43 is: 2,801.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,324.43 : 4,990.29 = 1,866.43 : x
  2. Step 2: Convert to fraction form
    3,324.43/4,990.29 = 1,866.43/x
  3. Step 3: Cross multiply
    3,324.43x = 4,990.29 × 1,866.43
  4. Step 4: Simplify right side
    3,324.43x = 9,314,026.96
  5. Step 5: Solve for x
    x = 9,314,026.96/3,324.43
  6. Step 6: Final answer
    x = 2,801.69

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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.