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Finding the Fourth Proportional to 8,012.12, 12,018.50 and 2,750.74

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Solution

The fourth proportional to 8,012.12, 12,018.50 and 2,750.74 is: 4,126.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,012.12 : 12,018.50 = 2,750.74 : x
  2. Step 2: Convert to fraction form
    8,012.12/12,018.50 = 2,750.74/x
  3. Step 3: Cross multiply
    8,012.12x = 12,018.50 × 2,750.74
  4. Step 4: Simplify right side
    8,012.12x = 33,059,768.69
  5. Step 5: Solve for x
    x = 33,059,768.69/8,012.12
  6. Step 6: Final answer
    x = 4,126.22

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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.