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Finding the Fourth Proportional to 1,992.95, 2,750.27 and 1,108.75

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Solution

The fourth proportional to 1,992.95, 2,750.27 and 1,108.75 is: 1,530.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,992.95 : 2,750.27 = 1,108.75 : x
  2. Step 2: Convert to fraction form
    1,992.95/2,750.27 = 1,108.75/x
  3. Step 3: Cross multiply
    1,992.95x = 2,750.27 × 1,108.75
  4. Step 4: Simplify right side
    1,992.95x = 3,049,349.44
  5. Step 5: Solve for x
    x = 3,049,349.44/1,992.95
  6. Step 6: Final answer
    x = 1,530.07

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.