Home / 859-1,485

Finding the Third Proportional to 859 and 1,485

Calculator

Solution

The third proportional to 859 and 1,485 is: 2,567.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    859 : 1,485 = 1,485 : x
  2. Step 2: Convert to fraction form
    859/1,485 = 1,485/x
  3. Step 3: Cross multiply
    859x = 1,485 × 1,485
  4. Step 4: Simplify right side
    859x = 2,205,225
  5. Step 5: Solve for x
    x = 2,205,225/859
  6. Step 6: Final answer
    x = 2,567.20

Related Problems

Find third proportional to 429.50 and 742.50
Half scale
Find third proportional to 1,718 and 2,970
Double scale
Find third proportional to 861 and 1,488
Similar ratio
Find third proportional to 1,288.50 and 2,227.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.73) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.