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Finding the Fourth Proportional to 8,604.51, 12,908.60 and 2,765.22

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Solution

The fourth proportional to 8,604.51, 12,908.60 and 2,765.22 is: 4,148.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,604.51 : 12,908.60 = 2,765.22 : x
  2. Step 2: Convert to fraction form
    8,604.51/12,908.60 = 2,765.22/x
  3. Step 3: Cross multiply
    8,604.51x = 12,908.60 × 2,765.22
  4. Step 4: Simplify right side
    8,604.51x = 35,695,105.07
  5. Step 5: Solve for x
    x = 35,695,105.07/8,604.51
  6. Step 6: Final answer
    x = 4,148.42

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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.