Home / 52.14-78.26-28.11

Finding the Fourth Proportional to 52.14, 78.26 and 28.11

Calculator

Solution

The fourth proportional to 52.14, 78.26 and 28.11 is: 42.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    52.14 : 78.26 = 28.11 : x
  2. Step 2: Convert to fraction form
    52.14/78.26 = 28.11/x
  3. Step 3: Cross multiply
    52.14x = 78.26 × 28.11
  4. Step 4: Simplify right side
    52.14x = 2,199.89
  5. Step 5: Solve for x
    x = 2,199.89/52.14
  6. Step 6: Final answer
    x = 42.19

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.