Home / 3,121.53-4,307.68-1,724.25

Finding the Fourth Proportional to 3,121.53, 4,307.68 and 1,724.25

Calculator

Solution

The fourth proportional to 3,121.53, 4,307.68 and 1,724.25 is: 2,379.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,121.53 : 4,307.68 = 1,724.25 : x
  2. Step 2: Convert to fraction form
    3,121.53/4,307.68 = 1,724.25/x
  3. Step 3: Cross multiply
    3,121.53x = 4,307.68 × 1,724.25
  4. Step 4: Simplify right side
    3,121.53x = 7,427,517.24
  5. Step 5: Solve for x
    x = 7,427,517.24/3,121.53
  6. Step 6: Final answer
    x = 2,379.45

Related Problems

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.