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Finding the Fourth Proportional to 2,181.86, 3,273.47 and 722.03

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Solution

The fourth proportional to 2,181.86, 3,273.47 and 722.03 is: 1,083.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,181.86 : 3,273.47 = 722.03 : x
  2. Step 2: Convert to fraction form
    2,181.86/3,273.47 = 722.03/x
  3. Step 3: Cross multiply
    2,181.86x = 3,273.47 × 722.03
  4. Step 4: Simplify right side
    2,181.86x = 2,363,539.93
  5. Step 5: Solve for x
    x = 2,363,539.93/2,181.86
  6. Step 6: Final answer
    x = 1,083.27

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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.