Home / 8.27-12.40-6

Finding the Fourth Proportional to 8.27, 12.40 and 6

Calculator

Solution

The fourth proportional to 8.27, 12.40 and 6 is: 9.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    8.27 : 12.40 = 6 : x
  2. Step 2: Convert to fraction form
    8.27/12.40 = 6/x
  3. Step 3: Cross multiply
    8.27x = 12.40 × 6
  4. Step 4: Simplify right side
    8.27x = 74.37
  5. Step 5: Solve for x
    x = 74.37/8.27
  6. Step 6: Final answer
    x = 9.00

Related Problems

Find fourth proportional to 4.13, 6.20 and 3
Half scale
Find fourth proportional to 16.53, 24.79 and 12
Double scale
Find fourth proportional to 9.27, 13.89 and 7
Similar ratio
Find fourth proportional to 12.40, 18.59 and 9
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.