Home / 8,821.31-13,236.41-3,890.43

Finding the Fourth Proportional to 8,821.31, 13,236.41 and 3,890.43

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Solution

The fourth proportional to 8,821.31, 13,236.41 and 3,890.43 is: 5,837.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,821.31 : 13,236.41 = 3,890.43 : x
  2. Step 2: Convert to fraction form
    8,821.31/13,236.41 = 3,890.43/x
  3. Step 3: Cross multiply
    8,821.31x = 13,236.41 × 3,890.43
  4. Step 4: Simplify right side
    8,821.31x = 51,495,336.28
  5. Step 5: Solve for x
    x = 51,495,336.28/8,821.31
  6. Step 6: Final answer
    x = 5,837.61

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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.