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Finding the Fourth Proportional to 8,333, 12,489.78 and 4,633.46

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Solution

The fourth proportional to 8,333, 12,489.78 and 4,633.46 is: 6,944.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,333 : 12,489.78 = 4,633.46 : x
  2. Step 2: Convert to fraction form
    8,333/12,489.78 = 4,633.46/x
  3. Step 3: Cross multiply
    8,333x = 12,489.78 × 4,633.46
  4. Step 4: Simplify right side
    8,333x = 57,870,896.04
  5. Step 5: Solve for x
    x = 57,870,896.04/8,333
  6. Step 6: Final answer
    x = 6,944.79

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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.