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Finding the Fourth Proportional to 5,876.49, 8,815.08 and 2,129.09

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Solution

The fourth proportional to 5,876.49, 8,815.08 and 2,129.09 is: 3,193.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,876.49 : 8,815.08 = 2,129.09 : x
  2. Step 2: Convert to fraction form
    5,876.49/8,815.08 = 2,129.09/x
  3. Step 3: Cross multiply
    5,876.49x = 8,815.08 × 2,129.09
  4. Step 4: Simplify right side
    5,876.49x = 18,768,054.60
  5. Step 5: Solve for x
    x = 18,768,054.60/5,876.49
  6. Step 6: Final answer
    x = 3,193.75

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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.