Home / 3,639.77-5,022.65-2,147.75

Finding the Fourth Proportional to 3,639.77, 5,022.65 and 2,147.75

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Solution

The fourth proportional to 3,639.77, 5,022.65 and 2,147.75 is: 2,963.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,639.77 : 5,022.65 = 2,147.75 : x
  2. Step 2: Convert to fraction form
    3,639.77/5,022.65 = 2,147.75/x
  3. Step 3: Cross multiply
    3,639.77x = 5,022.65 × 2,147.75
  4. Step 4: Simplify right side
    3,639.77x = 10,787,396.54
  5. Step 5: Solve for x
    x = 10,787,396.54/3,639.77
  6. Step 6: Final answer
    x = 2,963.76

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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.