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Finding the Fourth Proportional to 3,358.90, 5,033.42 and 1,690.73

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Solution

The fourth proportional to 3,358.90, 5,033.42 and 1,690.73 is: 2,533.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,358.90 : 5,033.42 = 1,690.73 : x
  2. Step 2: Convert to fraction form
    3,358.90/5,033.42 = 1,690.73/x
  3. Step 3: Cross multiply
    3,358.90x = 5,033.42 × 1,690.73
  4. Step 4: Simplify right side
    3,358.90x = 8,510,154.20
  5. Step 5: Solve for x
    x = 8,510,154.20/3,358.90
  6. Step 6: Final answer
    x = 2,533.61

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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.