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Finding the Fourth Proportional to 8,960.39, 13,411.83 and 4,789.97

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Solution

The fourth proportional to 8,960.39, 13,411.83 and 4,789.97 is: 7,169.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,960.39 : 13,411.83 = 4,789.97 : x
  2. Step 2: Convert to fraction form
    8,960.39/13,411.83 = 4,789.97/x
  3. Step 3: Cross multiply
    8,960.39x = 13,411.83 × 4,789.97
  4. Step 4: Simplify right side
    8,960.39x = 64,242,263.35
  5. Step 5: Solve for x
    x = 64,242,263.35/8,960.39
  6. Step 6: Final answer
    x = 7,169.58

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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.