Home / 9.78-13.50-6.54

Finding the Fourth Proportional to 9.78, 13.50 and 6.54

Calculator

Solution

The fourth proportional to 9.78, 13.50 and 6.54 is: 9.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    9.78 : 13.50 = 6.54 : x
  2. Step 2: Convert to fraction form
    9.78/13.50 = 6.54/x
  3. Step 3: Cross multiply
    9.78x = 13.50 × 6.54
  4. Step 4: Simplify right side
    9.78x = 88.29
  5. Step 5: Solve for x
    x = 88.29/9.78
  6. Step 6: Final answer
    x = 9.03

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.