Home / 4,242-8,782

Finding the Third Proportional to 4,242 and 8,782

Calculator

Solution

The third proportional to 4,242 and 8,782 is: 18,180.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,242 : 8,782 = 8,782 : x
  2. Step 2: Convert to fraction form
    4,242/8,782 = 8,782/x
  3. Step 3: Cross multiply
    4,242x = 8,782 × 8,782
  4. Step 4: Simplify right side
    4,242x = 77,123,524
  5. Step 5: Solve for x
    x = 77,123,524/4,242
  6. Step 6: Final answer
    x = 18,180.93

Related Problems

Find third proportional to 2,121 and 4,391
Half scale
Find third proportional to 8,484 and 17,564
Double scale
Find third proportional to 4,244 and 8,786
Similar ratio
Find third proportional to 6,363 and 13,173
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.07) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.