Home / 2.06-3.08-1.78

Finding the Fourth Proportional to 2.06, 3.08 and 1.78

Calculator

Solution

The fourth proportional to 2.06, 3.08 and 1.78 is: 2.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    2.06 : 3.08 = 1.78 : x
  2. Step 2: Convert to fraction form
    2.06/3.08 = 1.78/x
  3. Step 3: Cross multiply
    2.06x = 3.08 × 1.78
  4. Step 4: Simplify right side
    2.06x = 5.49
  5. Step 5: Solve for x
    x = 5.49/2.06
  6. Step 6: Final answer
    x = 2.66

Related Problems

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.