Home / 3,131.81-4,321.84-1,734.53

Finding the Fourth Proportional to 3,131.81, 4,321.84 and 1,734.53

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Solution

The fourth proportional to 3,131.81, 4,321.84 and 1,734.53 is: 2,393.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,131.81 : 4,321.84 = 1,734.53 : x
  2. Step 2: Convert to fraction form
    3,131.81/4,321.84 = 1,734.53/x
  3. Step 3: Cross multiply
    3,131.81x = 4,321.84 × 1,734.53
  4. Step 4: Simplify right side
    3,131.81x = 7,496,361.14
  5. Step 5: Solve for x
    x = 7,496,361.14/3,131.81
  6. Step 6: Final answer
    x = 2,393.62

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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.