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Finding the Fourth Proportional to 8,513.91, 12,768.84 and 2,669.76

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Solution

The fourth proportional to 8,513.91, 12,768.84 and 2,669.76 is: 4,004.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,513.91 : 12,768.84 = 2,669.76 : x
  2. Step 2: Convert to fraction form
    8,513.91/12,768.84 = 2,669.76/x
  3. Step 3: Cross multiply
    8,513.91x = 12,768.84 × 2,669.76
  4. Step 4: Simplify right side
    8,513.91x = 34,089,738.28
  5. Step 5: Solve for x
    x = 34,089,738.28/8,513.91
  6. Step 6: Final answer
    x = 4,004.01

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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.