Home / 3,984.09-5,499.60-2,789.13

Finding the Fourth Proportional to 3,984.09, 5,499.60 and 2,789.13

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Solution

The fourth proportional to 3,984.09, 5,499.60 and 2,789.13 is: 3,850.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,984.09 : 5,499.60 = 2,789.13 : x
  2. Step 2: Convert to fraction form
    3,984.09/5,499.60 = 2,789.13/x
  3. Step 3: Cross multiply
    3,984.09x = 5,499.60 × 2,789.13
  4. Step 4: Simplify right side
    3,984.09x = 15,339,109.51
  5. Step 5: Solve for x
    x = 15,339,109.51/3,984.09
  6. Step 6: Final answer
    x = 3,850.09

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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.