Home / 917-1,638

Finding the Third Proportional to 917 and 1,638

Calculator

Solution

The third proportional to 917 and 1,638 is: 2,925.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    917 : 1,638 = 1,638 : x
  2. Step 2: Convert to fraction form
    917/1,638 = 1,638/x
  3. Step 3: Cross multiply
    917x = 1,638 × 1,638
  4. Step 4: Simplify right side
    917x = 2,683,044
  5. Step 5: Solve for x
    x = 2,683,044/917
  6. Step 6: Final answer
    x = 2,925.89

Related Problems

Find third proportional to 458.50 and 819
Half scale
Find third proportional to 1,834 and 3,276
Double scale
Find third proportional to 919 and 1,642
Similar ratio
Find third proportional to 1,375.50 and 2,457
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.79) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.