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Finding the Fourth Proportional to 9,105.66, 13,659.47 and 2,865.86

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Solution

The fourth proportional to 9,105.66, 13,659.47 and 2,865.86 is: 4,299.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,105.66 : 13,659.47 = 2,865.86 : x
  2. Step 2: Convert to fraction form
    9,105.66/13,659.47 = 2,865.86/x
  3. Step 3: Cross multiply
    9,105.66x = 13,659.47 × 2,865.86
  4. Step 4: Simplify right side
    9,105.66x = 39,146,108.04
  5. Step 5: Solve for x
    x = 39,146,108.04/9,105.66
  6. Step 6: Final answer
    x = 4,299.10

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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.