Home / 2.16-2.99-2

Finding the Fourth Proportional to 2.16, 2.99 and 2

Calculator

Solution

The fourth proportional to 2.16, 2.99 and 2 is: 2.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    2.16 : 2.99 = 2 : x
  2. Step 2: Convert to fraction form
    2.16/2.99 = 2/x
  3. Step 3: Cross multiply
    2.16x = 2.99 × 2
  4. Step 4: Simplify right side
    2.16x = 5.98
  5. Step 5: Solve for x
    x = 5.98/2.16
  6. Step 6: Final answer
    x = 2.77

Related Problems

Find fourth proportional to 1.08, 1.50 and 1
Half scale
Find fourth proportional to 4.32, 5.98 and 4
Double scale
Find fourth proportional to 3.16, 4.37 and 3
Similar ratio
Find fourth proportional to 3.24, 4.49 and 3
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.