Home / 2.71-4.07-2

Finding the Fourth Proportional to 2.71, 4.07 and 2

Calculator

Solution

The fourth proportional to 2.71, 4.07 and 2 is: 3.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    2.71 : 4.07 = 2 : x
  2. Step 2: Convert to fraction form
    2.71/4.07 = 2/x
  3. Step 3: Cross multiply
    2.71x = 4.07 × 2
  4. Step 4: Simplify right side
    2.71x = 8.14
  5. Step 5: Solve for x
    x = 8.14/2.71
  6. Step 6: Final answer
    x = 3.00

Related Problems

Find fourth proportional to 1.36, 2.04 and 1
Half scale
Find fourth proportional to 5.42, 8.14 and 4
Double scale
Find fourth proportional to 3.71, 5.57 and 3
Similar ratio
Find fourth proportional to 4.07, 6.11 and 3
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.