Home / 1,400-1,932-779.04

Finding the Fourth Proportional to 1,400, 1,932 and 779.04

Calculator

Solution

The fourth proportional to 1,400, 1,932 and 779.04 is: 1,075.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,400 : 1,932 = 779.04 : x
  2. Step 2: Convert to fraction form
    1,400/1,932 = 779.04/x
  3. Step 3: Cross multiply
    1,400x = 1,932 × 779.04
  4. Step 4: Simplify right side
    1,400x = 1,505,105.28
  5. Step 5: Solve for x
    x = 1,505,105.28/1,400
  6. Step 6: Final answer
    x = 1,075.08

Related Problems

Find fourth proportional to 700, 966 and 389.52
Half scale
Find fourth proportional to 2,800, 3,864 and 1,558.08
Double scale
Find fourth proportional to 1,401, 1,933.38 and 780.04
Similar ratio
Find fourth proportional to 2,100, 2,898 and 1,168.56
1.5x scale

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.