Home / 1,078.44-1,487.07-728.52

Finding the Fourth Proportional to 1,078.44, 1,487.07 and 728.52

Calculator

Solution

The fourth proportional to 1,078.44, 1,487.07 and 728.52 is: 1,004.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,078.44 : 1,487.07 = 728.52 : x
  2. Step 2: Convert to fraction form
    1,078.44/1,487.07 = 728.52/x
  3. Step 3: Cross multiply
    1,078.44x = 1,487.07 × 728.52
  4. Step 4: Simplify right side
    1,078.44x = 1,083,360.24
  5. Step 5: Solve for x
    x = 1,083,360.24/1,078.44
  6. Step 6: Final answer
    x = 1,004.56

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.