Home / 3,945.08-5,917.60-1,478.15

Finding the Fourth Proportional to 3,945.08, 5,917.60 and 1,478.15

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Solution

The fourth proportional to 3,945.08, 5,917.60 and 1,478.15 is: 2,217.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,945.08 : 5,917.60 = 1,478.15 : x
  2. Step 2: Convert to fraction form
    3,945.08/5,917.60 = 1,478.15/x
  3. Step 3: Cross multiply
    3,945.08x = 5,917.60 × 1,478.15
  4. Step 4: Simplify right side
    3,945.08x = 8,747,093.05
  5. Step 5: Solve for x
    x = 8,747,093.05/3,945.08
  6. Step 6: Final answer
    x = 2,217.22

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.