Home / 8.28-12.41-4

Finding the Fourth Proportional to 8.28, 12.41 and 4

Calculator

Solution

The fourth proportional to 8.28, 12.41 and 4 is: 6.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    8.28 : 12.41 = 4 : x
  2. Step 2: Convert to fraction form
    8.28/12.41 = 4/x
  3. Step 3: Cross multiply
    8.28x = 12.41 × 4
  4. Step 4: Simplify right side
    8.28x = 49.64
  5. Step 5: Solve for x
    x = 49.64/8.28
  6. Step 6: Final answer
    x = 6.00

Related Problems

Find fourth proportional to 4.14, 6.21 and 2
Half scale
Find fourth proportional to 16.56, 24.82 and 8
Double scale
Find fourth proportional to 9.28, 13.91 and 5
Similar ratio
Find fourth proportional to 12.42, 18.62 and 6
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.