Home / 2,722.60-4,081.43-990

Finding the Fourth Proportional to 2,722.60, 4,081.43 and 990

Calculator

Solution

The fourth proportional to 2,722.60, 4,081.43 and 990 is: 1,484.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,722.60 : 4,081.43 = 990 : x
  2. Step 2: Convert to fraction form
    2,722.60/4,081.43 = 990/x
  3. Step 3: Cross multiply
    2,722.60x = 4,081.43 × 990
  4. Step 4: Simplify right side
    2,722.60x = 4,040,615.70
  5. Step 5: Solve for x
    x = 4,040,615.70/2,722.60
  6. Step 6: Final answer
    x = 1,484.10

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.