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Finding the Fourth Proportional to 6,721.84, 10,082.68 and 3,967.68

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Solution

The fourth proportional to 6,721.84, 10,082.68 and 3,967.68 is: 5,951.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,721.84 : 10,082.68 = 3,967.68 : x
  2. Step 2: Convert to fraction form
    6,721.84/10,082.68 = 3,967.68/x
  3. Step 3: Cross multiply
    6,721.84x = 10,082.68 × 3,967.68
  4. Step 4: Simplify right side
    6,721.84x = 40,004,847.78
  5. Step 5: Solve for x
    x = 40,004,847.78/6,721.84
  6. Step 6: Final answer
    x = 5,951.47

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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.