Home / 5.69-7.80-5.28

Finding the Fourth Proportional to 5.69, 7.80 and 5.28

Calculator

Solution

The fourth proportional to 5.69, 7.80 and 5.28 is: 7.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    5.69 : 7.80 = 5.28 : x
  2. Step 2: Convert to fraction form
    5.69/7.80 = 5.28/x
  3. Step 3: Cross multiply
    5.69x = 7.80 × 5.28
  4. Step 4: Simplify right side
    5.69x = 41.18
  5. Step 5: Solve for x
    x = 41.18/5.69
  6. Step 6: Final answer
    x = 7.24

Related Problems

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.