Home / 1,151.82-1,728-603.72

Finding the Fourth Proportional to 1,151.82, 1,728 and 603.72

Calculator

Solution

The fourth proportional to 1,151.82, 1,728 and 603.72 is: 905.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,151.82 : 1,728 = 603.72 : x
  2. Step 2: Convert to fraction form
    1,151.82/1,728 = 603.72/x
  3. Step 3: Cross multiply
    1,151.82x = 1,728 × 603.72
  4. Step 4: Simplify right side
    1,151.82x = 1,043,228.16
  5. Step 5: Solve for x
    x = 1,043,228.16/1,151.82
  6. Step 6: Final answer
    x = 905.72

Related Problems

Find fourth proportional to 575.91, 864 and 301.86
Half scale
Find fourth proportional to 2,303.64, 3,456 and 1,207.44
Double scale
Find fourth proportional to 1,152.82, 1,729.50 and 604.72
Similar ratio
Find fourth proportional to 1,727.73, 2,592 and 905.58
1.5x scale

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.