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Finding the Fourth Proportional to 3,330.39, 4,989.92 and 1,865.91

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Solution

The fourth proportional to 3,330.39, 4,989.92 and 1,865.91 is: 2,795.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,330.39 : 4,989.92 = 1,865.91 : x
  2. Step 2: Convert to fraction form
    3,330.39/4,989.92 = 1,865.91/x
  3. Step 3: Cross multiply
    3,330.39x = 4,989.92 × 1,865.91
  4. Step 4: Simplify right side
    3,330.39x = 9,310,732.30
  5. Step 5: Solve for x
    x = 9,310,732.30/3,330.39
  6. Step 6: Final answer
    x = 2,795.69

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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.