Home / 2,151-3,226.50-612

Finding the Fourth Proportional to 2,151, 3,226.50 and 612

Calculator

Solution

The fourth proportional to 2,151, 3,226.50 and 612 is: 918

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,151 : 3,226.50 = 612 : x
  2. Step 2: Convert to fraction form
    2,151/3,226.50 = 612/x
  3. Step 3: Cross multiply
    2,151x = 3,226.50 × 612
  4. Step 4: Simplify right side
    2,151x = 1,974,618
  5. Step 5: Solve for x
    x = 1,974,618/2,151
  6. Step 6: Final answer
    x = 918

Related Problems

Find fourth proportional to 1,075.50, 1,613.25 and 306
Half scale
Find fourth proportional to 4,302, 6,453 and 1,224
Double scale
Find fourth proportional to 2,152, 3,228 and 613
Similar ratio
Find fourth proportional to 3,226.50, 4,839.75 and 918
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.