Home / 6,389-7,010

Finding the Third Proportional to 6,389 and 7,010

Calculator

Solution

The third proportional to 6,389 and 7,010 is: 7,691.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,389 : 7,010 = 7,010 : x
  2. Step 2: Convert to fraction form
    6,389/7,010 = 7,010/x
  3. Step 3: Cross multiply
    6,389x = 7,010 × 7,010
  4. Step 4: Simplify right side
    6,389x = 49,140,100
  5. Step 5: Solve for x
    x = 49,140,100/6,389
  6. Step 6: Final answer
    x = 7,691.36

Related Problems

Find third proportional to 3,194.50 and 3,505
Half scale
Find third proportional to 12,778 and 14,020
Double scale
Find third proportional to 6,391 and 7,012
Similar ratio
Find third proportional to 9,583.50 and 10,515
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.10) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.