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Finding the Fourth Proportional to 8,458.96, 12,686.96 and 3,264.88

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Solution

The fourth proportional to 8,458.96, 12,686.96 and 3,264.88 is: 4,896.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,458.96 : 12,686.96 = 3,264.88 : x
  2. Step 2: Convert to fraction form
    8,458.96/12,686.96 = 3,264.88/x
  3. Step 3: Cross multiply
    8,458.96x = 12,686.96 × 3,264.88
  4. Step 4: Simplify right side
    8,458.96x = 41,421,401.96
  5. Step 5: Solve for x
    x = 41,421,401.96/8,458.96
  6. Step 6: Final answer
    x = 4,896.75

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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.