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Finding the Fourth Proportional to 8,415.24, 12,620.20 and 2,867.64

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Solution

The fourth proportional to 8,415.24, 12,620.20 and 2,867.64 is: 4,300.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,415.24 : 12,620.20 = 2,867.64 : x
  2. Step 2: Convert to fraction form
    8,415.24/12,620.20 = 2,867.64/x
  3. Step 3: Cross multiply
    8,415.24x = 12,620.20 × 2,867.64
  4. Step 4: Simplify right side
    8,415.24x = 36,190,190.33
  5. Step 5: Solve for x
    x = 36,190,190.33/8,415.24
  6. Step 6: Final answer
    x = 4,300.55

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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.