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Finding the Fourth Proportional to 8,468.51, 11,684 and 5,479.61

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Solution

The fourth proportional to 8,468.51, 11,684 and 5,479.61 is: 7,560.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,468.51 : 11,684 = 5,479.61 : x
  2. Step 2: Convert to fraction form
    8,468.51/11,684 = 5,479.61/x
  3. Step 3: Cross multiply
    8,468.51x = 11,684 × 5,479.61
  4. Step 4: Simplify right side
    8,468.51x = 64,023,704.82
  5. Step 5: Solve for x
    x = 64,023,704.82/8,468.51
  6. Step 6: Final answer
    x = 7,560.21

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.