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Finding the Fourth Proportional to 3,690.55, 5,535.15 and 1,092.87

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Solution

The fourth proportional to 3,690.55, 5,535.15 and 1,092.87 is: 1,639.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,690.55 : 5,535.15 = 1,092.87 : x
  2. Step 2: Convert to fraction form
    3,690.55/5,535.15 = 1,092.87/x
  3. Step 3: Cross multiply
    3,690.55x = 5,535.15 × 1,092.87
  4. Step 4: Simplify right side
    3,690.55x = 6,049,193.92
  5. Step 5: Solve for x
    x = 6,049,193.92/3,690.55
  6. Step 6: Final answer
    x = 1,639.10

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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.