Home / 7,128.74-10,692.15-2,198.27

Finding the Fourth Proportional to 7,128.74, 10,692.15 and 2,198.27

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Solution

The fourth proportional to 7,128.74, 10,692.15 and 2,198.27 is: 3,297.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,128.74 : 10,692.15 = 2,198.27 : x
  2. Step 2: Convert to fraction form
    7,128.74/10,692.15 = 2,198.27/x
  3. Step 3: Cross multiply
    7,128.74x = 10,692.15 × 2,198.27
  4. Step 4: Simplify right side
    7,128.74x = 23,504,232.58
  5. Step 5: Solve for x
    x = 23,504,232.58/7,128.74
  6. Step 6: Final answer
    x = 3,297.11

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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.