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Finding the Fourth Proportional to 6,287.11, 8,676.21 and 3,454.66

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Solution

The fourth proportional to 6,287.11, 8,676.21 and 3,454.66 is: 4,767.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,287.11 : 8,676.21 = 3,454.66 : x
  2. Step 2: Convert to fraction form
    6,287.11/8,676.21 = 3,454.66/x
  3. Step 3: Cross multiply
    6,287.11x = 8,676.21 × 3,454.66
  4. Step 4: Simplify right side
    6,287.11x = 29,973,355.64
  5. Step 5: Solve for x
    x = 29,973,355.64/6,287.11
  6. Step 6: Final answer
    x = 4,767.43

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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.