Home / 3.07-4-3.07

Finding the Fourth Proportional to 3.07, 4 and 3.07

Calculator

Solution

The fourth proportional to 3.07, 4 and 3.07 is: 4

Step by Step Solution

  1. Step 1: Write the proportion equation
    3.07 : 4 = 3.07 : x
  2. Step 2: Convert to fraction form
    3.07/4 = 3.07/x
  3. Step 3: Cross multiply
    3.07x = 4 × 3.07
  4. Step 4: Simplify right side
    3.07x = 12.28
  5. Step 5: Solve for x
    x = 12.28/3.07
  6. Step 6: Final answer
    x = 4

Related Problems

Find fourth proportional to 1.54, 2 and 1.54
Half scale
Find fourth proportional to 6.14, 8 and 6.14
Double scale
Find fourth proportional to 4.07, 5.30 and 4.07
Similar ratio
Find fourth proportional to 4.61, 6 and 4.61
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.30) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.