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Finding the Fourth Proportional to 1,992.12, 2,992.50 and 1,684.59

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Solution

The fourth proportional to 1,992.12, 2,992.50 and 1,684.59 is: 2,530.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,992.12 : 2,992.50 = 1,684.59 : x
  2. Step 2: Convert to fraction form
    1,992.12/2,992.50 = 1,684.59/x
  3. Step 3: Cross multiply
    1,992.12x = 2,992.50 × 1,684.59
  4. Step 4: Simplify right side
    1,992.12x = 5,041,135.58
  5. Step 5: Solve for x
    x = 5,041,135.58/1,992.12
  6. Step 6: Final answer
    x = 2,530.54

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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.