Home / 2.91-4-2.52

Finding the Fourth Proportional to 2.91, 4 and 2.52

Calculator

Solution

The fourth proportional to 2.91, 4 and 2.52 is: 3.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    2.91 : 4 = 2.52 : x
  2. Step 2: Convert to fraction form
    2.91/4 = 2.52/x
  3. Step 3: Cross multiply
    2.91x = 4 × 2.52
  4. Step 4: Simplify right side
    2.91x = 10.08
  5. Step 5: Solve for x
    x = 10.08/2.91
  6. Step 6: Final answer
    x = 3.46

Related Problems

Find fourth proportional to 1.46, 2 and 1.26
Half scale
Find fourth proportional to 5.82, 8 and 5.04
Double scale
Find fourth proportional to 3.91, 5.37 and 3.52
Similar ratio
Find fourth proportional to 4.37, 6 and 3.78
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.