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Finding the Fourth Proportional to 8,765.56, 13,142.22 and 4,080.52

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Solution

The fourth proportional to 8,765.56, 13,142.22 and 4,080.52 is: 6,117.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,765.56 : 13,142.22 = 4,080.52 : x
  2. Step 2: Convert to fraction form
    8,765.56/13,142.22 = 4,080.52/x
  3. Step 3: Cross multiply
    8,765.56x = 13,142.22 × 4,080.52
  4. Step 4: Simplify right side
    8,765.56x = 53,627,091.55
  5. Step 5: Solve for x
    x = 53,627,091.55/8,765.56
  6. Step 6: Final answer
    x = 6,117.93

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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.