Home / 8,478-9,180

Finding the Third Proportional to 8,478 and 9,180

Calculator

Solution

The third proportional to 8,478 and 9,180 is: 9,940.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,478 : 9,180 = 9,180 : x
  2. Step 2: Convert to fraction form
    8,478/9,180 = 9,180/x
  3. Step 3: Cross multiply
    8,478x = 9,180 × 9,180
  4. Step 4: Simplify right side
    8,478x = 84,272,400
  5. Step 5: Solve for x
    x = 84,272,400/8,478
  6. Step 6: Final answer
    x = 9,940.13

Related Problems

Find third proportional to 4,239 and 4,590
Half scale
Find third proportional to 16,956 and 18,360
Double scale
Find third proportional to 8,480 and 9,182
Similar ratio
Find third proportional to 12,717 and 13,770
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.08) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.