Home / 2,181.67-3,009.70-1,296.97

Finding the Fourth Proportional to 2,181.67, 3,009.70 and 1,296.97

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Solution

The fourth proportional to 2,181.67, 3,009.70 and 1,296.97 is: 1,789.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,181.67 : 3,009.70 = 1,296.97 : x
  2. Step 2: Convert to fraction form
    2,181.67/3,009.70 = 1,296.97/x
  3. Step 3: Cross multiply
    2,181.67x = 3,009.70 × 1,296.97
  4. Step 4: Simplify right side
    2,181.67x = 3,903,490.61
  5. Step 5: Solve for x
    x = 3,903,490.61/2,181.67
  6. Step 6: Final answer
    x = 1,789.22

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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.