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Finding the Fourth Proportional to 8,750.88, 13,129.92 and 6,819.84

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Solution

The fourth proportional to 8,750.88, 13,129.92 and 6,819.84 is: 10,232.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,750.88 : 13,129.92 = 6,819.84 : x
  2. Step 2: Convert to fraction form
    8,750.88/13,129.92 = 6,819.84/x
  3. Step 3: Cross multiply
    8,750.88x = 13,129.92 × 6,819.84
  4. Step 4: Simplify right side
    8,750.88x = 89,543,953.61
  5. Step 5: Solve for x
    x = 89,543,953.61/8,750.88
  6. Step 6: Final answer
    x = 10,232.57

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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.