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Finding the Fourth Proportional to 5,876.64, 8,815.60 and 2,179.36

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Solution

The fourth proportional to 5,876.64, 8,815.60 and 2,179.36 is: 3,269.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,876.64 : 8,815.60 = 2,179.36 : x
  2. Step 2: Convert to fraction form
    5,876.64/8,815.60 = 2,179.36/x
  3. Step 3: Cross multiply
    5,876.64x = 8,815.60 × 2,179.36
  4. Step 4: Simplify right side
    5,876.64x = 19,212,366.02
  5. Step 5: Solve for x
    x = 19,212,366.02/5,876.64
  6. Step 6: Final answer
    x = 3,269.28

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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.