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Finding the Fourth Proportional to 8,375.36, 12,564.94 and 2,828.48

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Solution

The fourth proportional to 8,375.36, 12,564.94 and 2,828.48 is: 4,243.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,375.36 : 12,564.94 = 2,828.48 : x
  2. Step 2: Convert to fraction form
    8,375.36/12,564.94 = 2,828.48/x
  3. Step 3: Cross multiply
    8,375.36x = 12,564.94 × 2,828.48
  4. Step 4: Simplify right side
    8,375.36x = 35,539,681.49
  5. Step 5: Solve for x
    x = 35,539,681.49/8,375.36
  6. Step 6: Final answer
    x = 4,243.36

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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.