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Finding the Fourth Proportional to 8,809.86, 13,212.01 and 2,885.38

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Solution

The fourth proportional to 8,809.86, 13,212.01 and 2,885.38 is: 4,327.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,809.86 : 13,212.01 = 2,885.38 : x
  2. Step 2: Convert to fraction form
    8,809.86/13,212.01 = 2,885.38/x
  3. Step 3: Cross multiply
    8,809.86x = 13,212.01 × 2,885.38
  4. Step 4: Simplify right side
    8,809.86x = 38,121,669.41
  5. Step 5: Solve for x
    x = 38,121,669.41/8,809.86
  6. Step 6: Final answer
    x = 4,327.16

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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.