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Finding the Fourth Proportional to 3,863.68, 5,795.52 and 1,913.92

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Solution

The fourth proportional to 3,863.68, 5,795.52 and 1,913.92 is: 2,870.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,863.68 : 5,795.52 = 1,913.92 : x
  2. Step 2: Convert to fraction form
    3,863.68/5,795.52 = 1,913.92/x
  3. Step 3: Cross multiply
    3,863.68x = 5,795.52 × 1,913.92
  4. Step 4: Simplify right side
    3,863.68x = 11,092,161.64
  5. Step 5: Solve for x
    x = 11,092,161.64/3,863.68
  6. Step 6: Final answer
    x = 2,870.88

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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.