Home / 1,451.12-2,002.52-787.98

Finding the Fourth Proportional to 1,451.12, 2,002.52 and 787.98

Calculator

Solution

The fourth proportional to 1,451.12, 2,002.52 and 787.98 is: 1,087.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,451.12 : 2,002.52 = 787.98 : x
  2. Step 2: Convert to fraction form
    1,451.12/2,002.52 = 787.98/x
  3. Step 3: Cross multiply
    1,451.12x = 2,002.52 × 787.98
  4. Step 4: Simplify right side
    1,451.12x = 1,577,943.92
  5. Step 5: Solve for x
    x = 1,577,943.92/1,451.12
  6. Step 6: Final answer
    x = 1,087.40

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.