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Finding the Fourth Proportional to 1,995.54, 2,993.69 and 762.85

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Solution

The fourth proportional to 1,995.54, 2,993.69 and 762.85 is: 1,144.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,995.54 : 2,993.69 = 762.85 : x
  2. Step 2: Convert to fraction form
    1,995.54/2,993.69 = 762.85/x
  3. Step 3: Cross multiply
    1,995.54x = 2,993.69 × 762.85
  4. Step 4: Simplify right side
    1,995.54x = 2,283,727.98
  5. Step 5: Solve for x
    x = 2,283,727.98/1,995.54
  6. Step 6: Final answer
    x = 1,144.42

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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.