Home / 3,978.95-5,970.24-1,787.09

Finding the Fourth Proportional to 3,978.95, 5,970.24 and 1,787.09

Calculator

Solution

The fourth proportional to 3,978.95, 5,970.24 and 1,787.09 is: 2,681.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,978.95 : 5,970.24 = 1,787.09 : x
  2. Step 2: Convert to fraction form
    3,978.95/5,970.24 = 1,787.09/x
  3. Step 3: Cross multiply
    3,978.95x = 5,970.24 × 1,787.09
  4. Step 4: Simplify right side
    3,978.95x = 10,669,326.35
  5. Step 5: Solve for x
    x = 10,669,326.35/3,978.95
  6. Step 6: Final answer
    x = 2,681.45

Related Problems

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.