Home / 3,825.88-5,271.35-2,989.36

Finding the Fourth Proportional to 3,825.88, 5,271.35 and 2,989.36

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Solution

The fourth proportional to 3,825.88, 5,271.35 and 2,989.36 is: 4,118.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,825.88 : 5,271.35 = 2,989.36 : x
  2. Step 2: Convert to fraction form
    3,825.88/5,271.35 = 2,989.36/x
  3. Step 3: Cross multiply
    3,825.88x = 5,271.35 × 2,989.36
  4. Step 4: Simplify right side
    3,825.88x = 15,757,950.05
  5. Step 5: Solve for x
    x = 15,757,950.05/3,825.88
  6. Step 6: Final answer
    x = 4,118.77

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1.5x scale

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.