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Finding the Fourth Proportional to 1,993.89, 2,992.64 and 1,020.67

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Solution

The fourth proportional to 1,993.89, 2,992.64 and 1,020.67 is: 1,531.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,993.89 : 2,992.64 = 1,020.67 : x
  2. Step 2: Convert to fraction form
    1,993.89/2,992.64 = 1,020.67/x
  3. Step 3: Cross multiply
    1,993.89x = 2,992.64 × 1,020.67
  4. Step 4: Simplify right side
    1,993.89x = 3,054,497.87
  5. Step 5: Solve for x
    x = 3,054,497.87/1,993.89
  6. Step 6: Final answer
    x = 1,531.93

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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.