Home / 2,721.72-4,083.93-1,261.90

Finding the Fourth Proportional to 2,721.72, 4,083.93 and 1,261.90

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Solution

The fourth proportional to 2,721.72, 4,083.93 and 1,261.90 is: 1,893.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,721.72 : 4,083.93 = 1,261.90 : x
  2. Step 2: Convert to fraction form
    2,721.72/4,083.93 = 1,261.90/x
  3. Step 3: Cross multiply
    2,721.72x = 4,083.93 × 1,261.90
  4. Step 4: Simplify right side
    2,721.72x = 5,153,511.27
  5. Step 5: Solve for x
    x = 5,153,511.27/2,721.72
  6. Step 6: Final answer
    x = 1,893.48

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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.