Home / 5,358-7,990

Finding the Third Proportional to 5,358 and 7,990

Calculator

Solution

The third proportional to 5,358 and 7,990 is: 11,914.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,358 : 7,990 = 7,990 : x
  2. Step 2: Convert to fraction form
    5,358/7,990 = 7,990/x
  3. Step 3: Cross multiply
    5,358x = 7,990 × 7,990
  4. Step 4: Simplify right side
    5,358x = 63,840,100
  5. Step 5: Solve for x
    x = 63,840,100/5,358
  6. Step 6: Final answer
    x = 11,914.91

Related Problems

Find third proportional to 2,679 and 3,995
Half scale
Find third proportional to 10,716 and 15,980
Double scale
Find third proportional to 5,360 and 7,993
Similar ratio
Find third proportional to 8,037 and 11,985
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.