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Finding the Fourth Proportional to 6,449, 8,899.62 and 3,505

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Solution

The fourth proportional to 6,449, 8,899.62 and 3,505 is: 4,836.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,449 : 8,899.62 = 3,505 : x
  2. Step 2: Convert to fraction form
    6,449/8,899.62 = 3,505/x
  3. Step 3: Cross multiply
    6,449x = 8,899.62 × 3,505
  4. Step 4: Simplify right side
    6,449x = 31,193,168.10
  5. Step 5: Solve for x
    x = 31,193,168.10/6,449
  6. Step 6: Final answer
    x = 4,836.90

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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.