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Finding the Fourth Proportional to 7,129.98, 10,694.27 and 2,198.30

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Solution

The fourth proportional to 7,129.98, 10,694.27 and 2,198.30 is: 3,297.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,129.98 : 10,694.27 = 2,198.30 : x
  2. Step 2: Convert to fraction form
    7,129.98/10,694.27 = 2,198.30/x
  3. Step 3: Cross multiply
    7,129.98x = 10,694.27 × 2,198.30
  4. Step 4: Simplify right side
    7,129.98x = 23,509,165.77
  5. Step 5: Solve for x
    x = 23,509,165.77/7,129.98
  6. Step 6: Final answer
    x = 3,297.23

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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.