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Finding the Fourth Proportional to 8,799, 13,201.20 and 2,959.80

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Solution

The fourth proportional to 8,799, 13,201.20 and 2,959.80 is: 4,440.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,799 : 13,201.20 = 2,959.80 : x
  2. Step 2: Convert to fraction form
    8,799/13,201.20 = 2,959.80/x
  3. Step 3: Cross multiply
    8,799x = 13,201.20 × 2,959.80
  4. Step 4: Simplify right side
    8,799x = 39,072,911.76
  5. Step 5: Solve for x
    x = 39,072,911.76/8,799
  6. Step 6: Final answer
    x = 4,440.61

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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.