Home / 3,660.72-5,489.92-1,928.40

Finding the Fourth Proportional to 3,660.72, 5,489.92 and 1,928.40

Calculator

Solution

The fourth proportional to 3,660.72, 5,489.92 and 1,928.40 is: 2,891.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,660.72 : 5,489.92 = 1,928.40 : x
  2. Step 2: Convert to fraction form
    3,660.72/5,489.92 = 1,928.40/x
  3. Step 3: Cross multiply
    3,660.72x = 5,489.92 × 1,928.40
  4. Step 4: Simplify right side
    3,660.72x = 10,586,761.73
  5. Step 5: Solve for x
    x = 10,586,761.73/3,660.72
  6. Step 6: Final answer
    x = 2,891.99

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.