Home / 2,109.76-2,910.98-1,225.04

Finding the Fourth Proportional to 2,109.76, 2,910.98 and 1,225.04

Calculator

Solution

The fourth proportional to 2,109.76, 2,910.98 and 1,225.04 is: 1,690.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,109.76 : 2,910.98 = 1,225.04 : x
  2. Step 2: Convert to fraction form
    2,109.76/2,910.98 = 1,225.04/x
  3. Step 3: Cross multiply
    2,109.76x = 2,910.98 × 1,225.04
  4. Step 4: Simplify right side
    2,109.76x = 3,566,060.81
  5. Step 5: Solve for x
    x = 3,566,060.81/2,109.76
  6. Step 6: Final answer
    x = 1,690.27

Related Problems

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.