Home / 2,721.72-4,084.60-1,993.16

Finding the Fourth Proportional to 2,721.72, 4,084.60 and 1,993.16

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Solution

The fourth proportional to 2,721.72, 4,084.60 and 1,993.16 is: 2,991.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,721.72 : 4,084.60 = 1,993.16 : x
  2. Step 2: Convert to fraction form
    2,721.72/4,084.60 = 1,993.16/x
  3. Step 3: Cross multiply
    2,721.72x = 4,084.60 × 1,993.16
  4. Step 4: Simplify right side
    2,721.72x = 8,141,261.34
  5. Step 5: Solve for x
    x = 8,141,261.34/2,721.72
  6. Step 6: Final answer
    x = 2,991.22

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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.