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Finding the Fourth Proportional to 8,751, 12,081.84 and 5,612.66

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Solution

The fourth proportional to 8,751, 12,081.84 and 5,612.66 is: 7,748.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,751 : 12,081.84 = 5,612.66 : x
  2. Step 2: Convert to fraction form
    8,751/12,081.84 = 5,612.66/x
  3. Step 3: Cross multiply
    8,751x = 12,081.84 × 5,612.66
  4. Step 4: Simplify right side
    8,751x = 67,811,260.09
  5. Step 5: Solve for x
    x = 67,811,260.09/8,751
  6. Step 6: Final answer
    x = 7,748.97

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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.