Home / 3.69-5.54-2

Finding the Fourth Proportional to 3.69, 5.54 and 2

Calculator

Solution

The fourth proportional to 3.69, 5.54 and 2 is: 3

Step by Step Solution

  1. Step 1: Write the proportion equation
    3.69 : 5.54 = 2 : x
  2. Step 2: Convert to fraction form
    3.69/5.54 = 2/x
  3. Step 3: Cross multiply
    3.69x = 5.54 × 2
  4. Step 4: Simplify right side
    3.69x = 11.07
  5. Step 5: Solve for x
    x = 11.07/3.69
  6. Step 6: Final answer
    x = 3

Related Problems

Find fourth proportional to 1.85, 2.77 and 1
Half scale
Find fourth proportional to 7.38, 11.07 and 4
Double scale
Find fourth proportional to 4.69, 7.04 and 3
Similar ratio
Find fourth proportional to 5.54, 8.30 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.