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Finding the Fourth Proportional to 8,936.61, 12,333.79 and 5,159.02

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Solution

The fourth proportional to 8,936.61, 12,333.79 and 5,159.02 is: 7,120.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,936.61 : 12,333.79 = 5,159.02 : x
  2. Step 2: Convert to fraction form
    8,936.61/12,333.79 = 5,159.02/x
  3. Step 3: Cross multiply
    8,936.61x = 12,333.79 × 5,159.02
  4. Step 4: Simplify right side
    8,936.61x = 63,630,207.62
  5. Step 5: Solve for x
    x = 63,630,207.62/8,936.61
  6. Step 6: Final answer
    x = 7,120.18

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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.