Home / 8,731.72-13,100.46-3,186.76

Finding the Fourth Proportional to 8,731.72, 13,100.46 and 3,186.76

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Solution

The fourth proportional to 8,731.72, 13,100.46 and 3,186.76 is: 4,781.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,731.72 : 13,100.46 = 3,186.76 : x
  2. Step 2: Convert to fraction form
    8,731.72/13,100.46 = 3,186.76/x
  3. Step 3: Cross multiply
    8,731.72x = 13,100.46 × 3,186.76
  4. Step 4: Simplify right side
    8,731.72x = 41,748,021.91
  5. Step 5: Solve for x
    x = 41,748,021.91/8,731.72
  6. Step 6: Final answer
    x = 4,781.19

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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.