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Finding the Fourth Proportional to 8,578.96, 12,872.48 and 3,036.48

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Solution

The fourth proportional to 8,578.96, 12,872.48 and 3,036.48 is: 4,556.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,578.96 : 12,872.48 = 3,036.48 : x
  2. Step 2: Convert to fraction form
    8,578.96/12,872.48 = 3,036.48/x
  3. Step 3: Cross multiply
    8,578.96x = 12,872.48 × 3,036.48
  4. Step 4: Simplify right side
    8,578.96x = 39,087,028.07
  5. Step 5: Solve for x
    x = 39,087,028.07/8,578.96
  6. Step 6: Final answer
    x = 4,556.15

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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.