Home / 543-921

Finding the Third Proportional to 543 and 921

Calculator

Solution

The third proportional to 543 and 921 is: 1,562.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    543 : 921 = 921 : x
  2. Step 2: Convert to fraction form
    543/921 = 921/x
  3. Step 3: Cross multiply
    543x = 921 × 921
  4. Step 4: Simplify right side
    543x = 848,241
  5. Step 5: Solve for x
    x = 848,241/543
  6. Step 6: Final answer
    x = 1,562.14

Related Problems

Find third proportional to 271.50 and 460.50
Half scale
Find third proportional to 1,086 and 1,842
Double scale
Find third proportional to 545 and 924
Similar ratio
Find third proportional to 814.50 and 1,381.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.70) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.