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Finding the Fourth Proportional to 8,052.76, 12,076.80 and 3,121.30

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Solution

The fourth proportional to 8,052.76, 12,076.80 and 3,121.30 is: 4,681.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,052.76 : 12,076.80 = 3,121.30 : x
  2. Step 2: Convert to fraction form
    8,052.76/12,076.80 = 3,121.30/x
  3. Step 3: Cross multiply
    8,052.76x = 12,076.80 × 3,121.30
  4. Step 4: Simplify right side
    8,052.76x = 37,695,315.84
  5. Step 5: Solve for x
    x = 37,695,315.84/8,052.76
  6. Step 6: Final answer
    x = 4,681.04

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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.