Home / 3,155.03-4,353.84-1,976.75

Finding the Fourth Proportional to 3,155.03, 4,353.84 and 1,976.75

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Solution

The fourth proportional to 3,155.03, 4,353.84 and 1,976.75 is: 2,727.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,155.03 : 4,353.84 = 1,976.75 : x
  2. Step 2: Convert to fraction form
    3,155.03/4,353.84 = 1,976.75/x
  3. Step 3: Cross multiply
    3,155.03x = 4,353.84 × 1,976.75
  4. Step 4: Simplify right side
    3,155.03x = 8,606,431.45
  5. Step 5: Solve for x
    x = 8,606,431.45/3,155.03
  6. Step 6: Final answer
    x = 2,727.85

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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.