Home / 1,228-1,842-316

Finding the Fourth Proportional to 1,228, 1,842 and 316

Calculator

Solution

The fourth proportional to 1,228, 1,842 and 316 is: 474

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,228 : 1,842 = 316 : x
  2. Step 2: Convert to fraction form
    1,228/1,842 = 316/x
  3. Step 3: Cross multiply
    1,228x = 1,842 × 316
  4. Step 4: Simplify right side
    1,228x = 582,072
  5. Step 5: Solve for x
    x = 582,072/1,228
  6. Step 6: Final answer
    x = 474

Related Problems

Find fourth proportional to 614, 921 and 158
Half scale
Find fourth proportional to 2,456, 3,684 and 632
Double scale
Find fourth proportional to 1,229, 1,843.50 and 317
Similar ratio
Find fourth proportional to 1,842, 2,763 and 474
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.