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Finding the Fourth Proportional to 6,343.09, 8,753.80 and 3,985.99

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Solution

The fourth proportional to 6,343.09, 8,753.80 and 3,985.99 is: 5,500.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,343.09 : 8,753.80 = 3,985.99 : x
  2. Step 2: Convert to fraction form
    6,343.09/8,753.80 = 3,985.99/x
  3. Step 3: Cross multiply
    6,343.09x = 8,753.80 × 3,985.99
  4. Step 4: Simplify right side
    6,343.09x = 34,892,559.26
  5. Step 5: Solve for x
    x = 34,892,559.26/6,343.09
  6. Step 6: Final answer
    x = 5,500.88

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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.