Home / 3,289.60-4,540.62-2,111.05

Finding the Fourth Proportional to 3,289.60, 4,540.62 and 2,111.05

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Solution

The fourth proportional to 3,289.60, 4,540.62 and 2,111.05 is: 2,913.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,289.60 : 4,540.62 = 2,111.05 : x
  2. Step 2: Convert to fraction form
    3,289.60/4,540.62 = 2,111.05/x
  3. Step 3: Cross multiply
    3,289.60x = 4,540.62 × 2,111.05
  4. Step 4: Simplify right side
    3,289.60x = 9,585,475.85
  5. Step 5: Solve for x
    x = 9,585,475.85/3,289.60
  6. Step 6: Final answer
    x = 2,913.87

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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.