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Finding the Fourth Proportional to 8,708.56, 13,064.81 and 3,161.89

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Solution

The fourth proportional to 8,708.56, 13,064.81 and 3,161.89 is: 4,743.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,708.56 : 13,064.81 = 3,161.89 : x
  2. Step 2: Convert to fraction form
    8,708.56/13,064.81 = 3,161.89/x
  3. Step 3: Cross multiply
    8,708.56x = 13,064.81 × 3,161.89
  4. Step 4: Simplify right side
    8,708.56x = 41,309,492.09
  5. Step 5: Solve for x
    x = 41,309,492.09/8,708.56
  6. Step 6: Final answer
    x = 4,743.55

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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.