Home / 3,678.62-5,076.64-2,106.70

Finding the Fourth Proportional to 3,678.62, 5,076.64 and 2,106.70

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Solution

The fourth proportional to 3,678.62, 5,076.64 and 2,106.70 is: 2,907.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,678.62 : 5,076.64 = 2,106.70 : x
  2. Step 2: Convert to fraction form
    3,678.62/5,076.64 = 2,106.70/x
  3. Step 3: Cross multiply
    3,678.62x = 5,076.64 × 2,106.70
  4. Step 4: Simplify right side
    3,678.62x = 10,694,957.49
  5. Step 5: Solve for x
    x = 10,694,957.49/3,678.62
  6. Step 6: Final answer
    x = 2,907.33

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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.