Home / 4.35-6-3.80

Finding the Fourth Proportional to 4.35, 6 and 3.80

Calculator

Solution

The fourth proportional to 4.35, 6 and 3.80 is: 5.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    4.35 : 6 = 3.80 : x
  2. Step 2: Convert to fraction form
    4.35/6 = 3.80/x
  3. Step 3: Cross multiply
    4.35x = 6 × 3.80
  4. Step 4: Simplify right side
    4.35x = 22.80
  5. Step 5: Solve for x
    x = 22.80/4.35
  6. Step 6: Final answer
    x = 5.24

Related Problems

Find fourth proportional to 2.18, 3 and 1.90
Half scale
Find fourth proportional to 8.70, 12 and 7.60
Double scale
Find fourth proportional to 5.35, 7.38 and 4.80
Similar ratio
Find fourth proportional to 6.53, 9 and 5.70
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.