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Finding the Fourth Proportional to 8,458.37, 12,688.77 and 2,615.44

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Solution

The fourth proportional to 8,458.37, 12,688.77 and 2,615.44 is: 3,923.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,458.37 : 12,688.77 = 2,615.44 : x
  2. Step 2: Convert to fraction form
    8,458.37/12,688.77 = 2,615.44/x
  3. Step 3: Cross multiply
    8,458.37x = 12,688.77 × 2,615.44
  4. Step 4: Simplify right side
    8,458.37x = 33,186,694.69
  5. Step 5: Solve for x
    x = 33,186,694.69/8,458.37
  6. Step 6: Final answer
    x = 3,923.53

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.