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Finding the Fourth Proportional to 8,788.79, 13,179.85 and 3,164.86

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Solution

The fourth proportional to 8,788.79, 13,179.85 and 3,164.86 is: 4,746.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,788.79 : 13,179.85 = 3,164.86 : x
  2. Step 2: Convert to fraction form
    8,788.79/13,179.85 = 3,164.86/x
  3. Step 3: Cross multiply
    8,788.79x = 13,179.85 × 3,164.86
  4. Step 4: Simplify right side
    8,788.79x = 41,712,380.07
  5. Step 5: Solve for x
    x = 41,712,380.07/8,788.79
  6. Step 6: Final answer
    x = 4,746.09

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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.