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Finding the Fourth Proportional to 8,479.62, 12,720.86 and 2,635.08

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Solution

The fourth proportional to 8,479.62, 12,720.86 and 2,635.08 is: 3,953.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,479.62 : 12,720.86 = 2,635.08 : x
  2. Step 2: Convert to fraction form
    8,479.62/12,720.86 = 2,635.08/x
  3. Step 3: Cross multiply
    8,479.62x = 12,720.86 × 2,635.08
  4. Step 4: Simplify right side
    8,479.62x = 33,520,483.77
  5. Step 5: Solve for x
    x = 33,520,483.77/8,479.62
  6. Step 6: Final answer
    x = 3,953.06

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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.