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Finding the Fourth Proportional to 8,708.59, 13,062.84 and 3,161.92

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Solution

The fourth proportional to 8,708.59, 13,062.84 and 3,161.92 is: 4,742.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,708.59 : 13,062.84 = 3,161.92 : x
  2. Step 2: Convert to fraction form
    8,708.59/13,062.84 = 3,161.92/x
  3. Step 3: Cross multiply
    8,708.59x = 13,062.84 × 3,161.92
  4. Step 4: Simplify right side
    8,708.59x = 41,303,655.05
  5. Step 5: Solve for x
    x = 41,303,655.05/8,708.59
  6. Step 6: Final answer
    x = 4,742.86

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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.