Home / 1,875-3,900

Finding the Third Proportional to 1,875 and 3,900

Calculator

Solution

The third proportional to 1,875 and 3,900 is: 8,112

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,875 : 3,900 = 3,900 : x
  2. Step 2: Convert to fraction form
    1,875/3,900 = 3,900/x
  3. Step 3: Cross multiply
    1,875x = 3,900 × 3,900
  4. Step 4: Simplify right side
    1,875x = 15,210,000
  5. Step 5: Solve for x
    x = 15,210,000/1,875
  6. Step 6: Final answer
    x = 8,112

Related Problems

Find third proportional to 937.50 and 1,950
Half scale
Find third proportional to 3,750 and 7,800
Double scale
Find third proportional to 1,877 and 3,904
Similar ratio
Find third proportional to 2,812.50 and 5,850
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.08) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.