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Finding the Fourth Proportional to 6,891.17, 10,335.20 and 1,960.70

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Solution

The fourth proportional to 6,891.17, 10,335.20 and 1,960.70 is: 2,940.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,891.17 : 10,335.20 = 1,960.70 : x
  2. Step 2: Convert to fraction form
    6,891.17/10,335.20 = 1,960.70/x
  3. Step 3: Cross multiply
    6,891.17x = 10,335.20 × 1,960.70
  4. Step 4: Simplify right side
    6,891.17x = 20,264,257.38
  5. Step 5: Solve for x
    x = 20,264,257.38/6,891.17
  6. Step 6: Final answer
    x = 2,940.61

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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.