Home / 6.94-10.40-6

Finding the Fourth Proportional to 6.94, 10.40 and 6

Calculator

Solution

The fourth proportional to 6.94, 10.40 and 6 is: 8.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    6.94 : 10.40 = 6 : x
  2. Step 2: Convert to fraction form
    6.94/10.40 = 6/x
  3. Step 3: Cross multiply
    6.94x = 10.40 × 6
  4. Step 4: Simplify right side
    6.94x = 62.40
  5. Step 5: Solve for x
    x = 62.40/6.94
  6. Step 6: Final answer
    x = 8.99

Related Problems

Find fourth proportional to 3.47, 5.20 and 3
Half scale
Find fourth proportional to 13.88, 20.80 and 12
Double scale
Find fourth proportional to 7.94, 11.90 and 7
Similar ratio
Find fourth proportional to 10.41, 15.60 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.