Home / 4.57-6.31-4

Finding the Fourth Proportional to 4.57, 6.31 and 4

Calculator

Solution

The fourth proportional to 4.57, 6.31 and 4 is: 5.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    4.57 : 6.31 = 4 : x
  2. Step 2: Convert to fraction form
    4.57/6.31 = 4/x
  3. Step 3: Cross multiply
    4.57x = 6.31 × 4
  4. Step 4: Simplify right side
    4.57x = 25.24
  5. Step 5: Solve for x
    x = 25.24/4.57
  6. Step 6: Final answer
    x = 5.52

Related Problems

Find fourth proportional to 2.29, 3.16 and 2
Half scale
Find fourth proportional to 9.14, 12.62 and 8
Double scale
Find fourth proportional to 5.57, 7.69 and 5
Similar ratio
Find fourth proportional to 6.86, 9.47 and 6
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.