Home / 1,202.85-1,815.82-1,190.70

Finding the Fourth Proportional to 1,202.85, 1,815.82 and 1,190.70

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Solution

The fourth proportional to 1,202.85, 1,815.82 and 1,190.70 is: 1,797.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,202.85 : 1,815.82 = 1,190.70 : x
  2. Step 2: Convert to fraction form
    1,202.85/1,815.82 = 1,190.70/x
  3. Step 3: Cross multiply
    1,202.85x = 1,815.82 × 1,190.70
  4. Step 4: Simplify right side
    1,202.85x = 2,162,093.90
  5. Step 5: Solve for x
    x = 2,162,093.90/1,202.85
  6. Step 6: Final answer
    x = 1,797.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.