Home / 3,927.80-5,419.88-2,249.04

Finding the Fourth Proportional to 3,927.80, 5,419.88 and 2,249.04

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Solution

The fourth proportional to 3,927.80, 5,419.88 and 2,249.04 is: 3,103.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,927.80 : 5,419.88 = 2,249.04 : x
  2. Step 2: Convert to fraction form
    3,927.80/5,419.88 = 2,249.04/x
  3. Step 3: Cross multiply
    3,927.80x = 5,419.88 × 2,249.04
  4. Step 4: Simplify right side
    3,927.80x = 12,189,526.92
  5. Step 5: Solve for x
    x = 12,189,526.92/3,927.80
  6. Step 6: Final answer
    x = 3,103.40

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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.