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Finding the Fourth Proportional to 6,891.92, 10,336.33 and 1,961.45

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Solution

The fourth proportional to 6,891.92, 10,336.33 and 1,961.45 is: 2,941.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,891.92 : 10,336.33 = 1,961.45 : x
  2. Step 2: Convert to fraction form
    6,891.92/10,336.33 = 1,961.45/x
  3. Step 3: Cross multiply
    6,891.92x = 10,336.33 × 1,961.45
  4. Step 4: Simplify right side
    6,891.92x = 20,274,215.42
  5. Step 5: Solve for x
    x = 20,274,215.42/6,891.92
  6. Step 6: Final answer
    x = 2,941.74

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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.