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Finding the Fourth Proportional to 7,662.68, 11,487.43 and 2,664.40

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Solution

The fourth proportional to 7,662.68, 11,487.43 and 2,664.40 is: 3,994.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,662.68 : 11,487.43 = 2,664.40 : x
  2. Step 2: Convert to fraction form
    7,662.68/11,487.43 = 2,664.40/x
  3. Step 3: Cross multiply
    7,662.68x = 11,487.43 × 2,664.40
  4. Step 4: Simplify right side
    7,662.68x = 30,607,108.49
  5. Step 5: Solve for x
    x = 30,607,108.49/7,662.68
  6. Step 6: Final answer
    x = 3,994.31

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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.