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Finding the Fourth Proportional to 8,758.80, 12,097.20 and 6,379.37

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Solution

The fourth proportional to 8,758.80, 12,097.20 and 6,379.37 is: 8,810.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,758.80 : 12,097.20 = 6,379.37 : x
  2. Step 2: Convert to fraction form
    8,758.80/12,097.20 = 6,379.37/x
  3. Step 3: Cross multiply
    8,758.80x = 12,097.20 × 6,379.37
  4. Step 4: Simplify right side
    8,758.80x = 77,172,555.73
  5. Step 5: Solve for x
    x = 77,172,555.73/8,758.80
  6. Step 6: Final answer
    x = 8,810.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.