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Finding the Fourth Proportional to 3,889.62, 5,827.55 and 2,653.02

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Solution

The fourth proportional to 3,889.62, 5,827.55 and 2,653.02 is: 3,974.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,889.62 : 5,827.55 = 2,653.02 : x
  2. Step 2: Convert to fraction form
    3,889.62/5,827.55 = 2,653.02/x
  3. Step 3: Cross multiply
    3,889.62x = 5,827.55 × 2,653.02
  4. Step 4: Simplify right side
    3,889.62x = 15,460,593.44
  5. Step 5: Solve for x
    x = 15,460,593.44/3,889.62
  6. Step 6: Final answer
    x = 3,974.83

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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.