Home / 3,120.68-4,305.14-1,861.10

Finding the Fourth Proportional to 3,120.68, 4,305.14 and 1,861.10

Calculator

Solution

The fourth proportional to 3,120.68, 4,305.14 and 1,861.10 is: 2,567.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,120.68 : 4,305.14 = 1,861.10 : x
  2. Step 2: Convert to fraction form
    3,120.68/4,305.14 = 1,861.10/x
  3. Step 3: Cross multiply
    3,120.68x = 4,305.14 × 1,861.10
  4. Step 4: Simplify right side
    3,120.68x = 8,012,296.05
  5. Step 5: Solve for x
    x = 8,012,296.05/3,120.68
  6. Step 6: Final answer
    x = 2,567.48

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.