Home / 2.02-2.75-2

Finding the Fourth Proportional to 2.02, 2.75 and 2

Calculator

Solution

The fourth proportional to 2.02, 2.75 and 2 is: 2.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    2.02 : 2.75 = 2 : x
  2. Step 2: Convert to fraction form
    2.02/2.75 = 2/x
  3. Step 3: Cross multiply
    2.02x = 2.75 × 2
  4. Step 4: Simplify right side
    2.02x = 5.50
  5. Step 5: Solve for x
    x = 5.50/2.02
  6. Step 6: Final answer
    x = 2.72

Related Problems

Find fourth proportional to 1.01, 1.38 and 1
Half scale
Find fourth proportional to 4.04, 5.50 and 4
Double scale
Find fourth proportional to 3.02, 4.11 and 3
Similar ratio
Find fourth proportional to 3.03, 4.13 and 3
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.