Home / 5,408-9,988

Finding the Third Proportional to 5,408 and 9,988

Calculator

Solution

The third proportional to 5,408 and 9,988 is: 18,446.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,408 : 9,988 = 9,988 : x
  2. Step 2: Convert to fraction form
    5,408/9,988 = 9,988/x
  3. Step 3: Cross multiply
    5,408x = 9,988 × 9,988
  4. Step 4: Simplify right side
    5,408x = 99,760,144
  5. Step 5: Solve for x
    x = 99,760,144/5,408
  6. Step 6: Final answer
    x = 18,446.77

Related Problems

Find third proportional to 2,704 and 4,994
Half scale
Find third proportional to 10,816 and 19,976
Double scale
Find third proportional to 5,410 and 9,992
Similar ratio
Find third proportional to 8,112 and 14,982
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.85) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.