Home / 1,089.45-1,503.77-716.72

Finding the Fourth Proportional to 1,089.45, 1,503.77 and 716.72

Calculator

Solution

The fourth proportional to 1,089.45, 1,503.77 and 716.72 is: 989.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,089.45 : 1,503.77 = 716.72 : x
  2. Step 2: Convert to fraction form
    1,089.45/1,503.77 = 716.72/x
  3. Step 3: Cross multiply
    1,089.45x = 1,503.77 × 716.72
  4. Step 4: Simplify right side
    1,089.45x = 1,077,770.93
  5. Step 5: Solve for x
    x = 1,077,770.93/1,089.45
  6. Step 6: Final answer
    x = 989.28

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.