Home / 7,664-8,780

Finding the Third Proportional to 7,664 and 8,780

Calculator

Solution

The third proportional to 7,664 and 8,780 is: 10,058.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,664 : 8,780 = 8,780 : x
  2. Step 2: Convert to fraction form
    7,664/8,780 = 8,780/x
  3. Step 3: Cross multiply
    7,664x = 8,780 × 8,780
  4. Step 4: Simplify right side
    7,664x = 77,088,400
  5. Step 5: Solve for x
    x = 77,088,400/7,664
  6. Step 6: Final answer
    x = 10,058.51

Related Problems

Find third proportional to 3,832 and 4,390
Half scale
Find third proportional to 15,328 and 17,560
Double scale
Find third proportional to 7,666 and 8,782
Similar ratio
Find third proportional to 11,496 and 13,170
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.