Home / 2,811.44-4,217.64-863.60

Finding the Fourth Proportional to 2,811.44, 4,217.64 and 863.60

Calculator

Solution

The fourth proportional to 2,811.44, 4,217.64 and 863.60 is: 1,295.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,811.44 : 4,217.64 = 863.60 : x
  2. Step 2: Convert to fraction form
    2,811.44/4,217.64 = 863.60/x
  3. Step 3: Cross multiply
    2,811.44x = 4,217.64 × 863.60
  4. Step 4: Simplify right side
    2,811.44x = 3,642,353.90
  5. Step 5: Solve for x
    x = 3,642,353.90/2,811.44
  6. Step 6: Final answer
    x = 1,295.55

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.