Home / 2,972-6,428

Finding the Third Proportional to 2,972 and 6,428

Calculator

Solution

The third proportional to 2,972 and 6,428 is: 13,902.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,972 : 6,428 = 6,428 : x
  2. Step 2: Convert to fraction form
    2,972/6,428 = 6,428/x
  3. Step 3: Cross multiply
    2,972x = 6,428 × 6,428
  4. Step 4: Simplify right side
    2,972x = 41,319,184
  5. Step 5: Solve for x
    x = 41,319,184/2,972
  6. Step 6: Final answer
    x = 13,902.82

Related Problems

Find third proportional to 1,486 and 3,214
Half scale
Find third proportional to 5,944 and 12,856
Double scale
Find third proportional to 2,974 and 6,432
Similar ratio
Find third proportional to 4,458 and 9,642
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.