Home / 31.88-47.85-25.19

Finding the Fourth Proportional to 31.88, 47.85 and 25.19

Calculator

Solution

The fourth proportional to 31.88, 47.85 and 25.19 is: 37.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    31.88 : 47.85 = 25.19 : x
  2. Step 2: Convert to fraction form
    31.88/47.85 = 25.19/x
  3. Step 3: Cross multiply
    31.88x = 47.85 × 25.19
  4. Step 4: Simplify right side
    31.88x = 1,205.34
  5. Step 5: Solve for x
    x = 1,205.34/31.88
  6. Step 6: Final answer
    x = 37.81

Related Problems

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.