Home / 2,721.42-4,083.75-1,261.08

Finding the Fourth Proportional to 2,721.42, 4,083.75 and 1,261.08

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Solution

The fourth proportional to 2,721.42, 4,083.75 and 1,261.08 is: 1,892.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,721.42 : 4,083.75 = 1,261.08 : x
  2. Step 2: Convert to fraction form
    2,721.42/4,083.75 = 1,261.08/x
  3. Step 3: Cross multiply
    2,721.42x = 4,083.75 × 1,261.08
  4. Step 4: Simplify right side
    2,721.42x = 5,149,935.45
  5. Step 5: Solve for x
    x = 5,149,935.45/2,721.42
  6. Step 6: Final answer
    x = 1,892.37

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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.