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Finding the Fourth Proportional to 6,754.86, 9,321.21 and 3,922.29

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Solution

The fourth proportional to 6,754.86, 9,321.21 and 3,922.29 is: 5,412.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,754.86 : 9,321.21 = 3,922.29 : x
  2. Step 2: Convert to fraction form
    6,754.86/9,321.21 = 3,922.29/x
  3. Step 3: Cross multiply
    6,754.86x = 9,321.21 × 3,922.29
  4. Step 4: Simplify right side
    6,754.86x = 36,560,488.77
  5. Step 5: Solve for x
    x = 36,560,488.77/6,754.86
  6. Step 6: Final answer
    x = 5,412.47

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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.