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Finding the Fourth Proportional to 3,917.65, 5,874.53 and 1,248.89

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Solution

The fourth proportional to 3,917.65, 5,874.53 and 1,248.89 is: 1,872.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,917.65 : 5,874.53 = 1,248.89 : x
  2. Step 2: Convert to fraction form
    3,917.65/5,874.53 = 1,248.89/x
  3. Step 3: Cross multiply
    3,917.65x = 5,874.53 × 1,248.89
  4. Step 4: Simplify right side
    3,917.65x = 7,336,659.58
  5. Step 5: Solve for x
    x = 7,336,659.58/3,917.65
  6. Step 6: Final answer
    x = 1,872.72

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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.