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Finding the Fourth Proportional to 5,815, 8,025.80 and 3,331

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Solution

The fourth proportional to 5,815, 8,025.80 and 3,331 is: 4,597.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,815 : 8,025.80 = 3,331 : x
  2. Step 2: Convert to fraction form
    5,815/8,025.80 = 3,331/x
  3. Step 3: Cross multiply
    5,815x = 8,025.80 × 3,331
  4. Step 4: Simplify right side
    5,815x = 26,733,939.80
  5. Step 5: Solve for x
    x = 26,733,939.80/5,815
  6. Step 6: Final answer
    x = 4,597.41

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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.