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Finding the Fourth Proportional to 3,591.72, 5,389.20 and 1,835.64

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Solution

The fourth proportional to 3,591.72, 5,389.20 and 1,835.64 is: 2,754.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,591.72 : 5,389.20 = 1,835.64 : x
  2. Step 2: Convert to fraction form
    3,591.72/5,389.20 = 1,835.64/x
  3. Step 3: Cross multiply
    3,591.72x = 5,389.20 × 1,835.64
  4. Step 4: Simplify right side
    3,591.72x = 9,892,631.09
  5. Step 5: Solve for x
    x = 9,892,631.09/3,591.72
  6. Step 6: Final answer
    x = 2,754.29

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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.