Home / 2,155.36-3,232.40-1,808.80

Finding the Fourth Proportional to 2,155.36, 3,232.40 and 1,808.80

Calculator

Solution

The fourth proportional to 2,155.36, 3,232.40 and 1,808.80 is: 2,712.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,155.36 : 3,232.40 = 1,808.80 : x
  2. Step 2: Convert to fraction form
    2,155.36/3,232.40 = 1,808.80/x
  3. Step 3: Cross multiply
    2,155.36x = 3,232.40 × 1,808.80
  4. Step 4: Simplify right side
    2,155.36x = 5,846,765.12
  5. Step 5: Solve for x
    x = 5,846,765.12/2,155.36
  6. Step 6: Final answer
    x = 2,712.66

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.