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Finding the Fourth Proportional to 3,586.62, 5,379.90 and 2,124.72

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Solution

The fourth proportional to 3,586.62, 5,379.90 and 2,124.72 is: 3,187.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,586.62 : 5,379.90 = 2,124.72 : x
  2. Step 2: Convert to fraction form
    3,586.62/5,379.90 = 2,124.72/x
  3. Step 3: Cross multiply
    3,586.62x = 5,379.90 × 2,124.72
  4. Step 4: Simplify right side
    3,586.62x = 11,430,781.13
  5. Step 5: Solve for x
    x = 11,430,781.13/3,586.62
  6. Step 6: Final answer
    x = 3,187.06

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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.