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Finding the Fourth Proportional to 8,810.80, 13,212.80 and 2,568.72

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Solution

The fourth proportional to 8,810.80, 13,212.80 and 2,568.72 is: 3,852.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,810.80 : 13,212.80 = 2,568.72 : x
  2. Step 2: Convert to fraction form
    8,810.80/13,212.80 = 2,568.72/x
  3. Step 3: Cross multiply
    8,810.80x = 13,212.80 × 2,568.72
  4. Step 4: Simplify right side
    8,810.80x = 33,939,983.62
  5. Step 5: Solve for x
    x = 33,939,983.62/8,810.80
  6. Step 6: Final answer
    x = 3,852.09

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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.