Home / 2,514-3,771-690

Finding the Fourth Proportional to 2,514, 3,771 and 690

Calculator

Solution

The fourth proportional to 2,514, 3,771 and 690 is: 1,035

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,514 : 3,771 = 690 : x
  2. Step 2: Convert to fraction form
    2,514/3,771 = 690/x
  3. Step 3: Cross multiply
    2,514x = 3,771 × 690
  4. Step 4: Simplify right side
    2,514x = 2,601,990
  5. Step 5: Solve for x
    x = 2,601,990/2,514
  6. Step 6: Final answer
    x = 1,035

Related Problems

Find fourth proportional to 1,257, 1,885.50 and 345
Half scale
Find fourth proportional to 5,028, 7,542 and 1,380
Double scale
Find fourth proportional to 2,515, 3,772.50 and 691
Similar ratio
Find fourth proportional to 3,771, 5,656.50 and 1,035
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.