Home / 3,128.64-4,692.94-1,255.38

Finding the Fourth Proportional to 3,128.64, 4,692.94 and 1,255.38

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Solution

The fourth proportional to 3,128.64, 4,692.94 and 1,255.38 is: 1,883.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,128.64 : 4,692.94 = 1,255.38 : x
  2. Step 2: Convert to fraction form
    3,128.64/4,692.94 = 1,255.38/x
  3. Step 3: Cross multiply
    3,128.64x = 4,692.94 × 1,255.38
  4. Step 4: Simplify right side
    3,128.64x = 5,891,399.55
  5. Step 5: Solve for x
    x = 5,891,399.55/3,128.64
  6. Step 6: Final answer
    x = 1,883.05

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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.