Home / 1,076-1,620

Finding the Third Proportional to 1,076 and 1,620

Calculator

Solution

The third proportional to 1,076 and 1,620 is: 2,439.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,076 : 1,620 = 1,620 : x
  2. Step 2: Convert to fraction form
    1,076/1,620 = 1,620/x
  3. Step 3: Cross multiply
    1,076x = 1,620 × 1,620
  4. Step 4: Simplify right side
    1,076x = 2,624,400
  5. Step 5: Solve for x
    x = 2,624,400/1,076
  6. Step 6: Final answer
    x = 2,439.03

Related Problems

Find third proportional to 538 and 810
Half scale
Find third proportional to 2,152 and 3,240
Double scale
Find third proportional to 1,078 and 1,623
Similar ratio
Find third proportional to 1,614 and 2,430
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.