Home / 4,260.43-6,390.65-1,921.54

Finding the Fourth Proportional to 4,260.43, 6,390.65 and 1,921.54

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Solution

The fourth proportional to 4,260.43, 6,390.65 and 1,921.54 is: 2,882.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,260.43 : 6,390.65 = 1,921.54 : x
  2. Step 2: Convert to fraction form
    4,260.43/6,390.65 = 1,921.54/x
  3. Step 3: Cross multiply
    4,260.43x = 6,390.65 × 1,921.54
  4. Step 4: Simplify right side
    4,260.43x = 12,279,879.60
  5. Step 5: Solve for x
    x = 12,279,879.60/4,260.43
  6. Step 6: Final answer
    x = 2,882.31

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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.