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Finding the Fourth Proportional to 3,611.62, 5,424.99 and 3,209.32

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Solution

The fourth proportional to 3,611.62, 5,424.99 and 3,209.32 is: 4,820.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,611.62 : 5,424.99 = 3,209.32 : x
  2. Step 2: Convert to fraction form
    3,611.62/5,424.99 = 3,209.32/x
  3. Step 3: Cross multiply
    3,611.62x = 5,424.99 × 3,209.32
  4. Step 4: Simplify right side
    3,611.62x = 17,410,528.91
  5. Step 5: Solve for x
    x = 17,410,528.91/3,611.62
  6. Step 6: Final answer
    x = 4,820.70

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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.