Home / 1,420-1,859

Finding the Third Proportional to 1,420 and 1,859

Calculator

Solution

The third proportional to 1,420 and 1,859 is: 2,433.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,420 : 1,859 = 1,859 : x
  2. Step 2: Convert to fraction form
    1,420/1,859 = 1,859/x
  3. Step 3: Cross multiply
    1,420x = 1,859 × 1,859
  4. Step 4: Simplify right side
    1,420x = 3,455,881
  5. Step 5: Solve for x
    x = 3,455,881/1,420
  6. Step 6: Final answer
    x = 2,433.72

Related Problems

Find third proportional to 710 and 929.50
Half scale
Find third proportional to 2,840 and 3,718
Double scale
Find third proportional to 1,422 and 1,862
Similar ratio
Find third proportional to 2,130 and 2,788.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.31) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.