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Finding the Fourth Proportional to 3,288.89, 4,929.57 and 2,892.78

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Solution

The fourth proportional to 3,288.89, 4,929.57 and 2,892.78 is: 4,335.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,288.89 : 4,929.57 = 2,892.78 : x
  2. Step 2: Convert to fraction form
    3,288.89/4,929.57 = 2,892.78/x
  3. Step 3: Cross multiply
    3,288.89x = 4,929.57 × 2,892.78
  4. Step 4: Simplify right side
    3,288.89x = 14,260,161.50
  5. Step 5: Solve for x
    x = 14,260,161.50/3,288.89
  6. Step 6: Final answer
    x = 4,335.87

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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.