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Finding the Fourth Proportional to 8,628.63, 12,943.67 and 2,388.64

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Solution

The fourth proportional to 8,628.63, 12,943.67 and 2,388.64 is: 3,583.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,628.63 : 12,943.67 = 2,388.64 : x
  2. Step 2: Convert to fraction form
    8,628.63/12,943.67 = 2,388.64/x
  3. Step 3: Cross multiply
    8,628.63x = 12,943.67 × 2,388.64
  4. Step 4: Simplify right side
    8,628.63x = 30,917,768.03
  5. Step 5: Solve for x
    x = 30,917,768.03/8,628.63
  6. Step 6: Final answer
    x = 3,583.16

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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.