Home / 1,971.94-2,720.73-1,185.43

Finding the Fourth Proportional to 1,971.94, 2,720.73 and 1,185.43

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Solution

The fourth proportional to 1,971.94, 2,720.73 and 1,185.43 is: 1,635.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,971.94 : 2,720.73 = 1,185.43 : x
  2. Step 2: Convert to fraction form
    1,971.94/2,720.73 = 1,185.43/x
  3. Step 3: Cross multiply
    1,971.94x = 2,720.73 × 1,185.43
  4. Step 4: Simplify right side
    1,971.94x = 3,225,234.96
  5. Step 5: Solve for x
    x = 3,225,234.96/1,971.94
  6. Step 6: Final answer
    x = 1,635.56

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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.