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Finding the Fourth Proportional to 3,318.94, 4,981.49 and 1,676.64

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Solution

The fourth proportional to 3,318.94, 4,981.49 and 1,676.64 is: 2,516.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,318.94 : 4,981.49 = 1,676.64 : x
  2. Step 2: Convert to fraction form
    3,318.94/4,981.49 = 1,676.64/x
  3. Step 3: Cross multiply
    3,318.94x = 4,981.49 × 1,676.64
  4. Step 4: Simplify right side
    3,318.94x = 8,352,172.68
  5. Step 5: Solve for x
    x = 8,352,172.68/3,318.94
  6. Step 6: Final answer
    x = 2,516.52

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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.