Home / 3,939,007.76-5,435,825.43-2,128,171.76

Finding the Fourth Proportional to 3,939,007.76, 5,435,825.43 and 2,128,171.76

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Solution

The fourth proportional to 3,939,007.76, 5,435,825.43 and 2,128,171.76 is: 2,936,874.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,939,007.76 : 5,435,825.43 = 2,128,171.76 : x
  2. Step 2: Convert to fraction form
    3,939,007.76/5,435,825.43 = 2,128,171.76/x
  3. Step 3: Cross multiply
    3,939,007.76x = 5,435,825.43 × 2,128,171.76
  4. Step 4: Simplify right side
    3,939,007.76x = 11,568,370,172,415.86
  5. Step 5: Solve for x
    x = 11,568,370,172,415.86/3,939,007.76
  6. Step 6: Final answer
    x = 2,936,874.18

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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.