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Finding the Fourth Proportional to 6,960.78, 10,440.90 and 3,011.49

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Solution

The fourth proportional to 6,960.78, 10,440.90 and 3,011.49 is: 4,517.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,960.78 : 10,440.90 = 3,011.49 : x
  2. Step 2: Convert to fraction form
    6,960.78/10,440.90 = 3,011.49/x
  3. Step 3: Cross multiply
    6,960.78x = 10,440.90 × 3,011.49
  4. Step 4: Simplify right side
    6,960.78x = 31,442,665.94
  5. Step 5: Solve for x
    x = 31,442,665.94/6,960.78
  6. Step 6: Final answer
    x = 4,517.12

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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.