Home / 970.50-1,287

Finding the Third Proportional to 970.50 and 1,287

Calculator

Solution

The third proportional to 970.50 and 1,287 is: 1,706.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    970.50 : 1,287 = 1,287 : x
  2. Step 2: Convert to fraction form
    970.50/1,287 = 1,287/x
  3. Step 3: Cross multiply
    970.50x = 1,287 × 1,287
  4. Step 4: Simplify right side
    970.50x = 1,656,369
  5. Step 5: Solve for x
    x = 1,656,369/970.50
  6. Step 6: Final answer
    x = 1,706.72

Related Problems

Find third proportional to 485.25 and 643.50
Half scale
Find third proportional to 1,941 and 2,574
Double scale
Find third proportional to 973 and 1,290
Similar ratio
Find third proportional to 1,455.75 and 1,930.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.33) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.