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Finding the Fourth Proportional to 6,503.54, 9,755.34 and 2,121

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Solution

The fourth proportional to 6,503.54, 9,755.34 and 2,121 is: 3,181.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,503.54 : 9,755.34 = 2,121 : x
  2. Step 2: Convert to fraction form
    6,503.54/9,755.34 = 2,121/x
  3. Step 3: Cross multiply
    6,503.54x = 9,755.34 × 2,121
  4. Step 4: Simplify right side
    6,503.54x = 20,691,076.14
  5. Step 5: Solve for x
    x = 20,691,076.14/6,503.54
  6. Step 6: Final answer
    x = 3,181.51

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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.