Home / 3,678.49-5,076.71-2,107.09

Finding the Fourth Proportional to 3,678.49, 5,076.71 and 2,107.09

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Solution

The fourth proportional to 3,678.49, 5,076.71 and 2,107.09 is: 2,908.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,678.49 : 5,076.71 = 2,107.09 : x
  2. Step 2: Convert to fraction form
    3,678.49/5,076.71 = 2,107.09/x
  3. Step 3: Cross multiply
    3,678.49x = 5,076.71 × 2,107.09
  4. Step 4: Simplify right side
    3,678.49x = 10,697,084.87
  5. Step 5: Solve for x
    x = 10,697,084.87/3,678.49
  6. Step 6: Final answer
    x = 2,908.01

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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.