Home / 831.88-1,248-750.28

Finding the Fourth Proportional to 831.88, 1,248 and 750.28

Calculator

Solution

The fourth proportional to 831.88, 1,248 and 750.28 is: 1,125.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    831.88 : 1,248 = 750.28 : x
  2. Step 2: Convert to fraction form
    831.88/1,248 = 750.28/x
  3. Step 3: Cross multiply
    831.88x = 1,248 × 750.28
  4. Step 4: Simplify right side
    831.88x = 936,349.44
  5. Step 5: Solve for x
    x = 936,349.44/831.88
  6. Step 6: Final answer
    x = 1,125.58

Related Problems

Find fourth proportional to 415.94, 624 and 375.14
Half scale
Find fourth proportional to 1,663.76, 2,496 and 1,500.56
Double scale
Find fourth proportional to 832.88, 1,249.50 and 751.28
Similar ratio
Find fourth proportional to 1,247.82, 1,872 and 1,125.42
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.