Home / 6.61-9.14-6

Finding the Fourth Proportional to 6.61, 9.14 and 6

Calculator

Solution

The fourth proportional to 6.61, 9.14 and 6 is: 8.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    6.61 : 9.14 = 6 : x
  2. Step 2: Convert to fraction form
    6.61/9.14 = 6/x
  3. Step 3: Cross multiply
    6.61x = 9.14 × 6
  4. Step 4: Simplify right side
    6.61x = 54.84
  5. Step 5: Solve for x
    x = 54.84/6.61
  6. Step 6: Final answer
    x = 8.30

Related Problems

Find fourth proportional to 3.31, 4.57 and 3
Half scale
Find fourth proportional to 13.22, 18.28 and 12
Double scale
Find fourth proportional to 7.61, 10.52 and 7
Similar ratio
Find fourth proportional to 9.92, 13.71 and 9
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.