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Finding the Fourth Proportional to 6,722.28, 9,277.31 and 3,738.69

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Solution

The fourth proportional to 6,722.28, 9,277.31 and 3,738.69 is: 5,159.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,722.28 : 9,277.31 = 3,738.69 : x
  2. Step 2: Convert to fraction form
    6,722.28/9,277.31 = 3,738.69/x
  3. Step 3: Cross multiply
    6,722.28x = 9,277.31 × 3,738.69
  4. Step 4: Simplify right side
    6,722.28x = 34,684,995.47
  5. Step 5: Solve for x
    x = 34,684,995.47/6,722.28
  6. Step 6: Final answer
    x = 5,159.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.