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Finding the Fourth Proportional to 8,549.78, 12,836.60 and 4,393.31

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Solution

The fourth proportional to 8,549.78, 12,836.60 and 4,393.31 is: 6,596.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,549.78 : 12,836.60 = 4,393.31 : x
  2. Step 2: Convert to fraction form
    8,549.78/12,836.60 = 4,393.31/x
  3. Step 3: Cross multiply
    8,549.78x = 12,836.60 × 4,393.31
  4. Step 4: Simplify right side
    8,549.78x = 56,395,141.18
  5. Step 5: Solve for x
    x = 56,395,141.18/8,549.78
  6. Step 6: Final answer
    x = 6,596.09

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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.