Home / 1,286.29-1,774.35-887.91

Finding the Fourth Proportional to 1,286.29, 1,774.35 and 887.91

Calculator

Solution

The fourth proportional to 1,286.29, 1,774.35 and 887.91 is: 1,224.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,286.29 : 1,774.35 = 887.91 : x
  2. Step 2: Convert to fraction form
    1,286.29/1,774.35 = 887.91/x
  3. Step 3: Cross multiply
    1,286.29x = 1,774.35 × 887.91
  4. Step 4: Simplify right side
    1,286.29x = 1,575,463.11
  5. Step 5: Solve for x
    x = 1,575,463.11/1,286.29
  6. Step 6: Final answer
    x = 1,224.81

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.