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Finding the Fourth Proportional to 3,889.35, 5,836.45 and 1,580.85

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Solution

The fourth proportional to 3,889.35, 5,836.45 and 1,580.85 is: 2,372.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,889.35 : 5,836.45 = 1,580.85 : x
  2. Step 2: Convert to fraction form
    3,889.35/5,836.45 = 1,580.85/x
  3. Step 3: Cross multiply
    3,889.35x = 5,836.45 × 1,580.85
  4. Step 4: Simplify right side
    3,889.35x = 9,226,551.98
  5. Step 5: Solve for x
    x = 9,226,551.98/3,889.35
  6. Step 6: Final answer
    x = 2,372.26

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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.