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Finding the Fourth Proportional to 8,375.99, 12,555.21 and 2,827.40

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Solution

The fourth proportional to 8,375.99, 12,555.21 and 2,827.40 is: 4,238.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,375.99 : 12,555.21 = 2,827.40 : x
  2. Step 2: Convert to fraction form
    8,375.99/12,555.21 = 2,827.40/x
  3. Step 3: Cross multiply
    8,375.99x = 12,555.21 × 2,827.40
  4. Step 4: Simplify right side
    8,375.99x = 35,498,600.75
  5. Step 5: Solve for x
    x = 35,498,600.75/8,375.99
  6. Step 6: Final answer
    x = 4,238.14

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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.