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Finding the Fourth Proportional to 1,992.66, 2,750.22 and 1,296.06

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Solution

The fourth proportional to 1,992.66, 2,750.22 and 1,296.06 is: 1,788.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,992.66 : 2,750.22 = 1,296.06 : x
  2. Step 2: Convert to fraction form
    1,992.66/2,750.22 = 1,296.06/x
  3. Step 3: Cross multiply
    1,992.66x = 2,750.22 × 1,296.06
  4. Step 4: Simplify right side
    1,992.66x = 3,564,450.13
  5. Step 5: Solve for x
    x = 3,564,450.13/1,992.66
  6. Step 6: Final answer
    x = 1,788.79

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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.