Home / 3,939,007-5,435,824.40-2,128,171

Finding the Fourth Proportional to 3,939,007, 5,435,824.40 and 2,128,171

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Solution

The fourth proportional to 3,939,007, 5,435,824.40 and 2,128,171 is: 2,936,873.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,939,007 : 5,435,824.40 = 2,128,171 : x
  2. Step 2: Convert to fraction form
    3,939,007/5,435,824.40 = 2,128,171/x
  3. Step 3: Cross multiply
    3,939,007x = 5,435,824.40 × 2,128,171
  4. Step 4: Simplify right side
    3,939,007x = 11,568,363,849,172.40
  5. Step 5: Solve for x
    x = 11,568,363,849,172.40/3,939,007
  6. Step 6: Final answer
    x = 2,936,873.14

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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.