Home / 1,987.28-2,742.49-1,103.06

Finding the Fourth Proportional to 1,987.28, 2,742.49 and 1,103.06

Calculator

Solution

The fourth proportional to 1,987.28, 2,742.49 and 1,103.06 is: 1,522.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,987.28 : 2,742.49 = 1,103.06 : x
  2. Step 2: Convert to fraction form
    1,987.28/2,742.49 = 1,103.06/x
  3. Step 3: Cross multiply
    1,987.28x = 2,742.49 × 1,103.06
  4. Step 4: Simplify right side
    1,987.28x = 3,025,131.02
  5. Step 5: Solve for x
    x = 3,025,131.02/1,987.28
  6. Step 6: Final answer
    x = 1,522.25

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.