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Finding the Fourth Proportional to 6,777.50, 10,167.90 and 2,160.50

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Solution

The fourth proportional to 6,777.50, 10,167.90 and 2,160.50 is: 3,241.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,777.50 : 10,167.90 = 2,160.50 : x
  2. Step 2: Convert to fraction form
    6,777.50/10,167.90 = 2,160.50/x
  3. Step 3: Cross multiply
    6,777.50x = 10,167.90 × 2,160.50
  4. Step 4: Simplify right side
    6,777.50x = 21,967,747.95
  5. Step 5: Solve for x
    x = 21,967,747.95/6,777.50
  6. Step 6: Final answer
    x = 3,241.28

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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.