Home / 3,420-3,708

Finding the Third Proportional to 3,420 and 3,708

Calculator

Solution

The third proportional to 3,420 and 3,708 is: 4,020.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,420 : 3,708 = 3,708 : x
  2. Step 2: Convert to fraction form
    3,420/3,708 = 3,708/x
  3. Step 3: Cross multiply
    3,420x = 3,708 × 3,708
  4. Step 4: Simplify right side
    3,420x = 13,749,264
  5. Step 5: Solve for x
    x = 13,749,264/3,420
  6. Step 6: Final answer
    x = 4,020.25

Related Problems

Find third proportional to 1,710 and 1,854
Half scale
Find third proportional to 6,840 and 7,416
Double scale
Find third proportional to 3,422 and 3,710
Similar ratio
Find third proportional to 5,130 and 5,562
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.08) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.