Home / 3,189.60-4,400.55-1,993.77

Finding the Fourth Proportional to 3,189.60, 4,400.55 and 1,993.77

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Solution

The fourth proportional to 3,189.60, 4,400.55 and 1,993.77 is: 2,750.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,189.60 : 4,400.55 = 1,993.77 : x
  2. Step 2: Convert to fraction form
    3,189.60/4,400.55 = 1,993.77/x
  3. Step 3: Cross multiply
    3,189.60x = 4,400.55 × 1,993.77
  4. Step 4: Simplify right side
    3,189.60x = 8,773,684.57
  5. Step 5: Solve for x
    x = 8,773,684.57/3,189.60
  6. Step 6: Final answer
    x = 2,750.72

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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.