Home / 7,128.27-10,692.95-2,198.41

Finding the Fourth Proportional to 7,128.27, 10,692.95 and 2,198.41

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Solution

The fourth proportional to 7,128.27, 10,692.95 and 2,198.41 is: 3,297.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,128.27 : 10,692.95 = 2,198.41 : x
  2. Step 2: Convert to fraction form
    7,128.27/10,692.95 = 2,198.41/x
  3. Step 3: Cross multiply
    7,128.27x = 10,692.95 × 2,198.41
  4. Step 4: Simplify right side
    7,128.27x = 23,507,450.49
  5. Step 5: Solve for x
    x = 23,507,450.49/7,128.27
  6. Step 6: Final answer
    x = 3,297.78

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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.