Home / 34-51.06-28

Finding the Fourth Proportional to 34, 51.06 and 28

Calculator

Solution

The fourth proportional to 34, 51.06 and 28 is: 42.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    34 : 51.06 = 28 : x
  2. Step 2: Convert to fraction form
    34/51.06 = 28/x
  3. Step 3: Cross multiply
    34x = 51.06 × 28
  4. Step 4: Simplify right side
    34x = 1,429.68
  5. Step 5: Solve for x
    x = 1,429.68/34
  6. Step 6: Final answer
    x = 42.05

Related Problems

Find fourth proportional to 17, 25.53 and 14
Half scale
Find fourth proportional to 68, 102.12 and 56
Double scale
Find fourth proportional to 35, 52.56 and 29
Similar ratio
Find fourth proportional to 51, 76.59 and 42
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.