Home / 1,397.34-1,928.58-900.60

Finding the Fourth Proportional to 1,397.34, 1,928.58 and 900.60

Calculator

Solution

The fourth proportional to 1,397.34, 1,928.58 and 900.60 is: 1,242.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,397.34 : 1,928.58 = 900.60 : x
  2. Step 2: Convert to fraction form
    1,397.34/1,928.58 = 900.60/x
  3. Step 3: Cross multiply
    1,397.34x = 1,928.58 × 900.60
  4. Step 4: Simplify right side
    1,397.34x = 1,736,879.15
  5. Step 5: Solve for x
    x = 1,736,879.15/1,397.34
  6. Step 6: Final answer
    x = 1,242.99

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.