Home / 7,128.10-10,692.15-2,197.30

Finding the Fourth Proportional to 7,128.10, 10,692.15 and 2,197.30

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Solution

The fourth proportional to 7,128.10, 10,692.15 and 2,197.30 is: 3,295.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,128.10 : 10,692.15 = 2,197.30 : x
  2. Step 2: Convert to fraction form
    7,128.10/10,692.15 = 2,197.30/x
  3. Step 3: Cross multiply
    7,128.10x = 10,692.15 × 2,197.30
  4. Step 4: Simplify right side
    7,128.10x = 23,493,861.20
  5. Step 5: Solve for x
    x = 23,493,861.20/7,128.10
  6. Step 6: Final answer
    x = 3,295.95

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Similar ratio
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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.