Home / 1,122.83-1,549.64-680.72

Finding the Fourth Proportional to 1,122.83, 1,549.64 and 680.72

Calculator

Solution

The fourth proportional to 1,122.83, 1,549.64 and 680.72 is: 939.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,122.83 : 1,549.64 = 680.72 : x
  2. Step 2: Convert to fraction form
    1,122.83/1,549.64 = 680.72/x
  3. Step 3: Cross multiply
    1,122.83x = 1,549.64 × 680.72
  4. Step 4: Simplify right side
    1,122.83x = 1,054,870.94
  5. Step 5: Solve for x
    x = 1,054,870.94/1,122.83
  6. Step 6: Final answer
    x = 939.48

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.