Home / 7,238-10,857-1,766

Finding the Fourth Proportional to 7,238, 10,857 and 1,766

Calculator

Solution

The fourth proportional to 7,238, 10,857 and 1,766 is: 2,649

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,238 : 10,857 = 1,766 : x
  2. Step 2: Convert to fraction form
    7,238/10,857 = 1,766/x
  3. Step 3: Cross multiply
    7,238x = 10,857 × 1,766
  4. Step 4: Simplify right side
    7,238x = 19,173,462
  5. Step 5: Solve for x
    x = 19,173,462/7,238
  6. Step 6: Final answer
    x = 2,649

Related Problems

Find fourth proportional to 3,619, 5,428.50 and 883
Half scale
Find fourth proportional to 14,476, 21,714 and 3,532
Double scale
Find fourth proportional to 7,239, 10,858.50 and 1,767
Similar ratio
Find fourth proportional to 10,857, 16,285.50 and 2,649
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.