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Finding the Fourth Proportional to 8,517.50, 11,741.34 and 6,721.89

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Solution

The fourth proportional to 8,517.50, 11,741.34 and 6,721.89 is: 9,266.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,517.50 : 11,741.34 = 6,721.89 : x
  2. Step 2: Convert to fraction form
    8,517.50/11,741.34 = 6,721.89/x
  3. Step 3: Cross multiply
    8,517.50x = 11,741.34 × 6,721.89
  4. Step 4: Simplify right side
    8,517.50x = 78,923,995.93
  5. Step 5: Solve for x
    x = 78,923,995.93/8,517.50
  6. Step 6: Final answer
    x = 9,266.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.