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Finding the Fourth Proportional to 6,321.54, 8,724.26 and 3,489.18

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Solution

The fourth proportional to 6,321.54, 8,724.26 and 3,489.18 is: 4,815.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,321.54 : 8,724.26 = 3,489.18 : x
  2. Step 2: Convert to fraction form
    6,321.54/8,724.26 = 3,489.18/x
  3. Step 3: Cross multiply
    6,321.54x = 8,724.26 × 3,489.18
  4. Step 4: Simplify right side
    6,321.54x = 30,440,469.89
  5. Step 5: Solve for x
    x = 30,440,469.89/6,321.54
  6. Step 6: Final answer
    x = 4,815.35

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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.