Home / 39.49-54.43-28.56

Finding the Fourth Proportional to 39.49, 54.43 and 28.56

Calculator

Solution

The fourth proportional to 39.49, 54.43 and 28.56 is: 39.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    39.49 : 54.43 = 28.56 : x
  2. Step 2: Convert to fraction form
    39.49/54.43 = 28.56/x
  3. Step 3: Cross multiply
    39.49x = 54.43 × 28.56
  4. Step 4: Simplify right side
    39.49x = 1,554.52
  5. Step 5: Solve for x
    x = 1,554.52/39.49
  6. Step 6: Final answer
    x = 39.36

Related Problems

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.