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Finding the Fourth Proportional to 3,128.44, 4,692.84 and 937.12

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Solution

The fourth proportional to 3,128.44, 4,692.84 and 937.12 is: 1,405.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,128.44 : 4,692.84 = 937.12 : x
  2. Step 2: Convert to fraction form
    3,128.44/4,692.84 = 937.12/x
  3. Step 3: Cross multiply
    3,128.44x = 4,692.84 × 937.12
  4. Step 4: Simplify right side
    3,128.44x = 4,397,754.22
  5. Step 5: Solve for x
    x = 4,397,754.22/3,128.44
  6. Step 6: Final answer
    x = 1,405.73

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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.