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Finding the Fourth Proportional to 1,992.77, 2,751.26 and 1,284.96

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Solution

The fourth proportional to 1,992.77, 2,751.26 and 1,284.96 is: 1,774.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,992.77 : 2,751.26 = 1,284.96 : x
  2. Step 2: Convert to fraction form
    1,992.77/2,751.26 = 1,284.96/x
  3. Step 3: Cross multiply
    1,992.77x = 2,751.26 × 1,284.96
  4. Step 4: Simplify right side
    1,992.77x = 3,535,259.05
  5. Step 5: Solve for x
    x = 3,535,259.05/1,992.77
  6. Step 6: Final answer
    x = 1,774.04

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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.