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Finding the Fourth Proportional to 6,481.12, 8,942.52 and 4,126.72

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Solution

The fourth proportional to 6,481.12, 8,942.52 and 4,126.72 is: 5,693.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,481.12 : 8,942.52 = 4,126.72 : x
  2. Step 2: Convert to fraction form
    6,481.12/8,942.52 = 4,126.72/x
  3. Step 3: Cross multiply
    6,481.12x = 8,942.52 × 4,126.72
  4. Step 4: Simplify right side
    6,481.12x = 36,903,276.13
  5. Step 5: Solve for x
    x = 36,903,276.13/6,481.12
  6. Step 6: Final answer
    x = 5,693.97

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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.