Home / 3.61-5.42-2

Finding the Fourth Proportional to 3.61, 5.42 and 2

Calculator

Solution

The fourth proportional to 3.61, 5.42 and 2 is: 3.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    3.61 : 5.42 = 2 : x
  2. Step 2: Convert to fraction form
    3.61/5.42 = 2/x
  3. Step 3: Cross multiply
    3.61x = 5.42 × 2
  4. Step 4: Simplify right side
    3.61x = 10.84
  5. Step 5: Solve for x
    x = 10.84/3.61
  6. Step 6: Final answer
    x = 3.00

Related Problems

Find fourth proportional to 1.81, 2.71 and 1
Half scale
Find fourth proportional to 7.22, 10.84 and 4
Double scale
Find fourth proportional to 4.61, 6.92 and 3
Similar ratio
Find fourth proportional to 5.42, 8.13 and 3
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.