Home / 2,138.53-3,208.22-822.19

Finding the Fourth Proportional to 2,138.53, 3,208.22 and 822.19

Calculator

Solution

The fourth proportional to 2,138.53, 3,208.22 and 822.19 is: 1,233.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,138.53 : 3,208.22 = 822.19 : x
  2. Step 2: Convert to fraction form
    2,138.53/3,208.22 = 822.19/x
  3. Step 3: Cross multiply
    2,138.53x = 3,208.22 × 822.19
  4. Step 4: Simplify right side
    2,138.53x = 2,637,766.40
  5. Step 5: Solve for x
    x = 2,637,766.40/2,138.53
  6. Step 6: Final answer
    x = 1,233.45

Related Problems

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.