Home / 2,790.62-4,186-842.82

Finding the Fourth Proportional to 2,790.62, 4,186 and 842.82

Calculator

Solution

The fourth proportional to 2,790.62, 4,186 and 842.82 is: 1,264.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,790.62 : 4,186 = 842.82 : x
  2. Step 2: Convert to fraction form
    2,790.62/4,186 = 842.82/x
  3. Step 3: Cross multiply
    2,790.62x = 4,186 × 842.82
  4. Step 4: Simplify right side
    2,790.62x = 3,528,044.52
  5. Step 5: Solve for x
    x = 3,528,044.52/2,790.62
  6. Step 6: Final answer
    x = 1,264.25

Related Problems

Find fourth proportional to 1,395.31, 2,093 and 421.41
Half scale
Find fourth proportional to 5,581.24, 8,372 and 1,685.64
Double scale
Find fourth proportional to 2,791.62, 4,187.50 and 843.82
Similar ratio
Find fourth proportional to 4,185.93, 6,279 and 1,264.23
1.5x scale

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.