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Finding the Fourth Proportional to 3,593.55, 5,389.55 and 1,128.05

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Solution

The fourth proportional to 3,593.55, 5,389.55 and 1,128.05 is: 1,691.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,593.55 : 5,389.55 = 1,128.05 : x
  2. Step 2: Convert to fraction form
    3,593.55/5,389.55 = 1,128.05/x
  3. Step 3: Cross multiply
    3,593.55x = 5,389.55 × 1,128.05
  4. Step 4: Simplify right side
    3,593.55x = 6,079,681.88
  5. Step 5: Solve for x
    x = 6,079,681.88/3,593.55
  6. Step 6: Final answer
    x = 1,691.83

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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.