Home / 3,939,005.39-5,435,822.16-2,128,169.39

Finding the Fourth Proportional to 3,939,005.39, 5,435,822.16 and 2,128,169.39

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Solution

The fourth proportional to 3,939,005.39, 5,435,822.16 and 2,128,169.39 is: 2,936,870.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,939,005.39 : 5,435,822.16 = 2,128,169.39 : x
  2. Step 2: Convert to fraction form
    3,939,005.39/5,435,822.16 = 2,128,169.39/x
  3. Step 3: Cross multiply
    3,939,005.39x = 5,435,822.16 × 2,128,169.39
  4. Step 4: Simplify right side
    3,939,005.39x = 11,568,350,303,216.57
  5. Step 5: Solve for x
    x = 11,568,350,303,216.57/3,939,005.39
  6. Step 6: Final answer
    x = 2,936,870.90

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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.