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Finding the Fourth Proportional to 8,012.55, 12,019.79 and 3,335.72

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Solution

The fourth proportional to 8,012.55, 12,019.79 and 3,335.72 is: 5,003.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,012.55 : 12,019.79 = 3,335.72 : x
  2. Step 2: Convert to fraction form
    8,012.55/12,019.79 = 3,335.72/x
  3. Step 3: Cross multiply
    8,012.55x = 12,019.79 × 3,335.72
  4. Step 4: Simplify right side
    8,012.55x = 40,094,577.12
  5. Step 5: Solve for x
    x = 40,094,577.12/8,012.55
  6. Step 6: Final answer
    x = 5,003.97

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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.