Home / 1,179-1,728

Finding the Third Proportional to 1,179 and 1,728

Calculator

Solution

The third proportional to 1,179 and 1,728 is: 2,532.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,179 : 1,728 = 1,728 : x
  2. Step 2: Convert to fraction form
    1,179/1,728 = 1,728/x
  3. Step 3: Cross multiply
    1,179x = 1,728 × 1,728
  4. Step 4: Simplify right side
    1,179x = 2,985,984
  5. Step 5: Solve for x
    x = 2,985,984/1,179
  6. Step 6: Final answer
    x = 2,532.64

Related Problems

Find third proportional to 589.50 and 864
Half scale
Find third proportional to 2,358 and 3,456
Double scale
Find third proportional to 1,181 and 1,731
Similar ratio
Find third proportional to 1,768.50 and 2,592
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.