Home / 3,907.45-5,392.06-2,138.73

Finding the Fourth Proportional to 3,907.45, 5,392.06 and 2,138.73

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Solution

The fourth proportional to 3,907.45, 5,392.06 and 2,138.73 is: 2,951.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,907.45 : 5,392.06 = 2,138.73 : x
  2. Step 2: Convert to fraction form
    3,907.45/5,392.06 = 2,138.73/x
  3. Step 3: Cross multiply
    3,907.45x = 5,392.06 × 2,138.73
  4. Step 4: Simplify right side
    3,907.45x = 11,532,160.48
  5. Step 5: Solve for x
    x = 11,532,160.48/3,907.45
  6. Step 6: Final answer
    x = 2,951.33

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Half scale
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Double scale
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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.