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Finding the Fourth Proportional to 2,133.88, 3,198.99 and 835.05

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Solution

The fourth proportional to 2,133.88, 3,198.99 and 835.05 is: 1,251.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,133.88 : 3,198.99 = 835.05 : x
  2. Step 2: Convert to fraction form
    2,133.88/3,198.99 = 835.05/x
  3. Step 3: Cross multiply
    2,133.88x = 3,198.99 × 835.05
  4. Step 4: Simplify right side
    2,133.88x = 2,671,316.60
  5. Step 5: Solve for x
    x = 2,671,316.60/2,133.88
  6. Step 6: Final answer
    x = 1,251.86

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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.