Home / 3,825.40-5,739.80-2,438.40

Finding the Fourth Proportional to 3,825.40, 5,739.80 and 2,438.40

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Solution

The fourth proportional to 3,825.40, 5,739.80 and 2,438.40 is: 3,658.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,825.40 : 5,739.80 = 2,438.40 : x
  2. Step 2: Convert to fraction form
    3,825.40/5,739.80 = 2,438.40/x
  3. Step 3: Cross multiply
    3,825.40x = 5,739.80 × 2,438.40
  4. Step 4: Simplify right side
    3,825.40x = 13,995,928.32
  5. Step 5: Solve for x
    x = 13,995,928.32/3,825.40
  6. Step 6: Final answer
    x = 3,658.68

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1.5x scale

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.