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Finding the Fourth Proportional to 8,042.40, 12,056.40 and 3,110.40

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Solution

The fourth proportional to 8,042.40, 12,056.40 and 3,110.40 is: 4,662.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,042.40 : 12,056.40 = 3,110.40 : x
  2. Step 2: Convert to fraction form
    8,042.40/12,056.40 = 3,110.40/x
  3. Step 3: Cross multiply
    8,042.40x = 12,056.40 × 3,110.40
  4. Step 4: Simplify right side
    8,042.40x = 37,500,226.56
  5. Step 5: Solve for x
    x = 37,500,226.56/8,042.40
  6. Step 6: Final answer
    x = 4,662.82

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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.