Home / 1,620-3,060

Finding the Third Proportional to 1,620 and 3,060

Calculator

Solution

The third proportional to 1,620 and 3,060 is: 5,780

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,620 : 3,060 = 3,060 : x
  2. Step 2: Convert to fraction form
    1,620/3,060 = 3,060/x
  3. Step 3: Cross multiply
    1,620x = 3,060 × 3,060
  4. Step 4: Simplify right side
    1,620x = 9,363,600
  5. Step 5: Solve for x
    x = 9,363,600/1,620
  6. Step 6: Final answer
    x = 5,780

Related Problems

Find third proportional to 810 and 1,530
Half scale
Find third proportional to 3,240 and 6,120
Double scale
Find third proportional to 1,622 and 3,064
Similar ratio
Find third proportional to 2,430 and 4,590
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.89) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.