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Finding the Fourth Proportional to 8,758.80, 13,150.50 and 8,362.05

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Solution

The fourth proportional to 8,758.80, 13,150.50 and 8,362.05 is: 12,554.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,758.80 : 13,150.50 = 8,362.05 : x
  2. Step 2: Convert to fraction form
    8,758.80/13,150.50 = 8,362.05/x
  3. Step 3: Cross multiply
    8,758.80x = 13,150.50 × 8,362.05
  4. Step 4: Simplify right side
    8,758.80x = 109,965,138.53
  5. Step 5: Solve for x
    x = 109,965,138.53/8,758.80
  6. Step 6: Final answer
    x = 12,554.82

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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.