Home / 1,836.91-2,756.85-1,399.51

Finding the Fourth Proportional to 1,836.91, 2,756.85 and 1,399.51

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Solution

The fourth proportional to 1,836.91, 2,756.85 and 1,399.51 is: 2,100.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,836.91 : 2,756.85 = 1,399.51 : x
  2. Step 2: Convert to fraction form
    1,836.91/2,756.85 = 1,399.51/x
  3. Step 3: Cross multiply
    1,836.91x = 2,756.85 × 1,399.51
  4. Step 4: Simplify right side
    1,836.91x = 3,858,239.14
  5. Step 5: Solve for x
    x = 3,858,239.14/1,836.91
  6. Step 6: Final answer
    x = 2,100.40

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.