Home / 3,108.39-4,286.36-2,400.35

Finding the Fourth Proportional to 3,108.39, 4,286.36 and 2,400.35

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Solution

The fourth proportional to 3,108.39, 4,286.36 and 2,400.35 is: 3,309.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,108.39 : 4,286.36 = 2,400.35 : x
  2. Step 2: Convert to fraction form
    3,108.39/4,286.36 = 2,400.35/x
  3. Step 3: Cross multiply
    3,108.39x = 4,286.36 × 2,400.35
  4. Step 4: Simplify right side
    3,108.39x = 10,288,759.40
  5. Step 5: Solve for x
    x = 10,288,759.40/3,108.39
  6. Step 6: Final answer
    x = 3,309.99

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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.