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Finding the Fourth Proportional to 8,558.99, 12,819.77 and 5,262.09

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Solution

The fourth proportional to 8,558.99, 12,819.77 and 5,262.09 is: 7,881.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,558.99 : 12,819.77 = 5,262.09 : x
  2. Step 2: Convert to fraction form
    8,558.99/12,819.77 = 5,262.09/x
  3. Step 3: Cross multiply
    8,558.99x = 12,819.77 × 5,262.09
  4. Step 4: Simplify right side
    8,558.99x = 67,458,783.52
  5. Step 5: Solve for x
    x = 67,458,783.52/8,558.99
  6. Step 6: Final answer
    x = 7,881.63

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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.