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Finding the Fourth Proportional to 8,318.80, 11,481.87 and 4,784.05

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Solution

The fourth proportional to 8,318.80, 11,481.87 and 4,784.05 is: 6,603.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,318.80 : 11,481.87 = 4,784.05 : x
  2. Step 2: Convert to fraction form
    8,318.80/11,481.87 = 4,784.05/x
  3. Step 3: Cross multiply
    8,318.80x = 11,481.87 × 4,784.05
  4. Step 4: Simplify right side
    8,318.80x = 54,929,840.17
  5. Step 5: Solve for x
    x = 54,929,840.17/8,318.80
  6. Step 6: Final answer
    x = 6,603.10

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.