Home / 5.23-7.22-4

Finding the Fourth Proportional to 5.23, 7.22 and 4

Calculator

Solution

The fourth proportional to 5.23, 7.22 and 4 is: 5.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    5.23 : 7.22 = 4 : x
  2. Step 2: Convert to fraction form
    5.23/7.22 = 4/x
  3. Step 3: Cross multiply
    5.23x = 7.22 × 4
  4. Step 4: Simplify right side
    5.23x = 28.88
  5. Step 5: Solve for x
    x = 28.88/5.23
  6. Step 6: Final answer
    x = 5.52

Related Problems

Find fourth proportional to 2.62, 3.61 and 2
Half scale
Find fourth proportional to 10.46, 14.44 and 8
Double scale
Find fourth proportional to 6.23, 8.60 and 5
Similar ratio
Find fourth proportional to 7.85, 10.83 and 6
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.