Home / 918.74-1,375.77-609.65

Finding the Fourth Proportional to 918.74, 1,375.77 and 609.65

Calculator

Solution

The fourth proportional to 918.74, 1,375.77 and 609.65 is: 912.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    918.74 : 1,375.77 = 609.65 : x
  2. Step 2: Convert to fraction form
    918.74/1,375.77 = 609.65/x
  3. Step 3: Cross multiply
    918.74x = 1,375.77 × 609.65
  4. Step 4: Simplify right side
    918.74x = 838,731.30
  5. Step 5: Solve for x
    x = 838,731.30/918.74
  6. Step 6: Final answer
    x = 912.92

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.