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Finding the Fourth Proportional to 6,287.66, 8,676.92 and 3,455.09

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Solution

The fourth proportional to 6,287.66, 8,676.92 and 3,455.09 is: 4,767.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,287.66 : 8,676.92 = 3,455.09 : x
  2. Step 2: Convert to fraction form
    6,287.66/8,676.92 = 3,455.09/x
  3. Step 3: Cross multiply
    6,287.66x = 8,676.92 × 3,455.09
  4. Step 4: Simplify right side
    6,287.66x = 29,979,522.25
  5. Step 5: Solve for x
    x = 29,979,522.25/6,287.66
  6. Step 6: Final answer
    x = 4,767.99

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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.