Home / 2,156-3,234-940

Finding the Fourth Proportional to 2,156, 3,234 and 940

Calculator

Solution

The fourth proportional to 2,156, 3,234 and 940 is: 1,410

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,156 : 3,234 = 940 : x
  2. Step 2: Convert to fraction form
    2,156/3,234 = 940/x
  3. Step 3: Cross multiply
    2,156x = 3,234 × 940
  4. Step 4: Simplify right side
    2,156x = 3,039,960
  5. Step 5: Solve for x
    x = 3,039,960/2,156
  6. Step 6: Final answer
    x = 1,410

Related Problems

Find fourth proportional to 1,078, 1,617 and 470
Half scale
Find fourth proportional to 4,312, 6,468 and 1,880
Double scale
Find fourth proportional to 2,157, 3,235.50 and 941
Similar ratio
Find fourth proportional to 3,234, 4,851 and 1,410
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.