Home / 3,927.67-5,418.01-2,489.40

Finding the Fourth Proportional to 3,927.67, 5,418.01 and 2,489.40

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Solution

The fourth proportional to 3,927.67, 5,418.01 and 2,489.40 is: 3,433.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,927.67 : 5,418.01 = 2,489.40 : x
  2. Step 2: Convert to fraction form
    3,927.67/5,418.01 = 2,489.40/x
  3. Step 3: Cross multiply
    3,927.67x = 5,418.01 × 2,489.40
  4. Step 4: Simplify right side
    3,927.67x = 13,487,594.09
  5. Step 5: Solve for x
    x = 13,487,594.09/3,927.67
  6. Step 6: Final answer
    x = 3,433.99

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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.