Home / 6,838.39-9,436.91-3,855.18

Finding the Fourth Proportional to 6,838.39, 9,436.91 and 3,855.18

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Solution

The fourth proportional to 6,838.39, 9,436.91 and 3,855.18 is: 5,320.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,838.39 : 9,436.91 = 3,855.18 : x
  2. Step 2: Convert to fraction form
    6,838.39/9,436.91 = 3,855.18/x
  3. Step 3: Cross multiply
    6,838.39x = 9,436.91 × 3,855.18
  4. Step 4: Simplify right side
    6,838.39x = 36,380,986.69
  5. Step 5: Solve for x
    x = 36,380,986.69/6,838.39
  6. Step 6: Final answer
    x = 5,320.11

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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.