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Finding the Fourth Proportional to 3,593.43, 5,390.65 and 1,128.44

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Solution

The fourth proportional to 3,593.43, 5,390.65 and 1,128.44 is: 1,692.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,593.43 : 5,390.65 = 1,128.44 : x
  2. Step 2: Convert to fraction form
    3,593.43/5,390.65 = 1,128.44/x
  3. Step 3: Cross multiply
    3,593.43x = 5,390.65 × 1,128.44
  4. Step 4: Simplify right side
    3,593.43x = 6,083,025.09
  5. Step 5: Solve for x
    x = 6,083,025.09/3,593.43
  6. Step 6: Final answer
    x = 1,692.82

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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.