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Finding the Fourth Proportional to 8,579.96, 12,870.86 and 2,735.20

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Solution

The fourth proportional to 8,579.96, 12,870.86 and 2,735.20 is: 4,103.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,579.96 : 12,870.86 = 2,735.20 : x
  2. Step 2: Convert to fraction form
    8,579.96/12,870.86 = 2,735.20/x
  3. Step 3: Cross multiply
    8,579.96x = 12,870.86 × 2,735.20
  4. Step 4: Simplify right side
    8,579.96x = 35,204,376.27
  5. Step 5: Solve for x
    x = 35,204,376.27/8,579.96
  6. Step 6: Final answer
    x = 4,103.09

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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.