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Finding the Fourth Proportional to 8,610.80, 12,907.94 and 2,763.41

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Solution

The fourth proportional to 8,610.80, 12,907.94 and 2,763.41 is: 4,142.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,610.80 : 12,907.94 = 2,763.41 : x
  2. Step 2: Convert to fraction form
    8,610.80/12,907.94 = 2,763.41/x
  3. Step 3: Cross multiply
    8,610.80x = 12,907.94 × 2,763.41
  4. Step 4: Simplify right side
    8,610.80x = 35,669,852.12
  5. Step 5: Solve for x
    x = 35,669,852.12/8,610.80
  6. Step 6: Final answer
    x = 4,142.46

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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.