Home / 2,940.35-4,407.45-991.88

Finding the Fourth Proportional to 2,940.35, 4,407.45 and 991.88

Calculator

Solution

The fourth proportional to 2,940.35, 4,407.45 and 991.88 is: 1,486.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,940.35 : 4,407.45 = 991.88 : x
  2. Step 2: Convert to fraction form
    2,940.35/4,407.45 = 991.88/x
  3. Step 3: Cross multiply
    2,940.35x = 4,407.45 × 991.88
  4. Step 4: Simplify right side
    2,940.35x = 4,371,661.51
  5. Step 5: Solve for x
    x = 4,371,661.51/2,940.35
  6. Step 6: Final answer
    x = 1,486.78

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.