Home / 1,278.95-1,764.97-754.98

Finding the Fourth Proportional to 1,278.95, 1,764.97 and 754.98

Calculator

Solution

The fourth proportional to 1,278.95, 1,764.97 and 754.98 is: 1,041.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,278.95 : 1,764.97 = 754.98 : x
  2. Step 2: Convert to fraction form
    1,278.95/1,764.97 = 754.98/x
  3. Step 3: Cross multiply
    1,278.95x = 1,764.97 × 754.98
  4. Step 4: Simplify right side
    1,278.95x = 1,332,515.16
  5. Step 5: Solve for x
    x = 1,332,515.16/1,278.95
  6. Step 6: Final answer
    x = 1,041.88

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.