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Finding the Fourth Proportional to 8,602.60, 12,879.26 and 5,293.38

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Solution

The fourth proportional to 8,602.60, 12,879.26 and 5,293.38 is: 7,924.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,602.60 : 12,879.26 = 5,293.38 : x
  2. Step 2: Convert to fraction form
    8,602.60/12,879.26 = 5,293.38/x
  3. Step 3: Cross multiply
    8,602.60x = 12,879.26 × 5,293.38
  4. Step 4: Simplify right side
    8,602.60x = 68,174,817.30
  5. Step 5: Solve for x
    x = 68,174,817.30/8,602.60
  6. Step 6: Final answer
    x = 7,924.91

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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.