Home / 3,975.87-5,486.77-2,183.51

Finding the Fourth Proportional to 3,975.87, 5,486.77 and 2,183.51

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Solution

The fourth proportional to 3,975.87, 5,486.77 and 2,183.51 is: 3,013.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,975.87 : 5,486.77 = 2,183.51 : x
  2. Step 2: Convert to fraction form
    3,975.87/5,486.77 = 2,183.51/x
  3. Step 3: Cross multiply
    3,975.87x = 5,486.77 × 2,183.51
  4. Step 4: Simplify right side
    3,975.87x = 11,980,402.75
  5. Step 5: Solve for x
    x = 11,980,402.75/3,975.87
  6. Step 6: Final answer
    x = 3,013.28

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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.