Home / 987.52-1,478.64-791.56

Finding the Fourth Proportional to 987.52, 1,478.64 and 791.56

Calculator

Solution

The fourth proportional to 987.52, 1,478.64 and 791.56 is: 1,185.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    987.52 : 1,478.64 = 791.56 : x
  2. Step 2: Convert to fraction form
    987.52/1,478.64 = 791.56/x
  3. Step 3: Cross multiply
    987.52x = 1,478.64 × 791.56
  4. Step 4: Simplify right side
    987.52x = 1,170,432.28
  5. Step 5: Solve for x
    x = 1,170,432.28/987.52
  6. Step 6: Final answer
    x = 1,185.22

Related Problems

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.