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Finding the Fourth Proportional to 6,880.70, 10,321.14 and 2,718.92

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Solution

The fourth proportional to 6,880.70, 10,321.14 and 2,718.92 is: 4,078.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,880.70 : 10,321.14 = 2,718.92 : x
  2. Step 2: Convert to fraction form
    6,880.70/10,321.14 = 2,718.92/x
  3. Step 3: Cross multiply
    6,880.70x = 10,321.14 × 2,718.92
  4. Step 4: Simplify right side
    6,880.70x = 28,062,353.97
  5. Step 5: Solve for x
    x = 28,062,353.97/6,880.70
  6. Step 6: Final answer
    x = 4,078.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.