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Finding the Fourth Proportional to 8,008.78, 12,005.86 and 3,623.84

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Solution

The fourth proportional to 8,008.78, 12,005.86 and 3,623.84 is: 5,432.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,008.78 : 12,005.86 = 3,623.84 : x
  2. Step 2: Convert to fraction form
    8,008.78/12,005.86 = 3,623.84/x
  3. Step 3: Cross multiply
    8,008.78x = 12,005.86 × 3,623.84
  4. Step 4: Simplify right side
    8,008.78x = 43,507,315.70
  5. Step 5: Solve for x
    x = 43,507,315.70/8,008.78
  6. Step 6: Final answer
    x = 5,432.45

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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.