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Finding the Fourth Proportional to 8,709.56, 13,066.31 and 3,162.89

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Solution

The fourth proportional to 8,709.56, 13,066.31 and 3,162.89 is: 4,745.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,709.56 : 13,066.31 = 3,162.89 : x
  2. Step 2: Convert to fraction form
    8,709.56/13,066.31 = 3,162.89/x
  3. Step 3: Cross multiply
    8,709.56x = 13,066.31 × 3,162.89
  4. Step 4: Simplify right side
    8,709.56x = 41,327,301.24
  5. Step 5: Solve for x
    x = 41,327,301.24/8,709.56
  6. Step 6: Final answer
    x = 4,745.05

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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.