Home / 1,247.95-1,722.16-688.44

Finding the Fourth Proportional to 1,247.95, 1,722.16 and 688.44

Calculator

Solution

The fourth proportional to 1,247.95, 1,722.16 and 688.44 is: 950.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,247.95 : 1,722.16 = 688.44 : x
  2. Step 2: Convert to fraction form
    1,247.95/1,722.16 = 688.44/x
  3. Step 3: Cross multiply
    1,247.95x = 1,722.16 × 688.44
  4. Step 4: Simplify right side
    1,247.95x = 1,185,603.83
  5. Step 5: Solve for x
    x = 1,185,603.83/1,247.95
  6. Step 6: Final answer
    x = 950.04

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.