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Finding the Fourth Proportional to 3,957,890.07, 5,461,898.82 and 2,147,054.07

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Solution

The fourth proportional to 3,957,890.07, 5,461,898.82 and 2,147,054.07 is: 2,962,940.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,957,890.07 : 5,461,898.82 = 2,147,054.07 : x
  2. Step 2: Convert to fraction form
    3,957,890.07/5,461,898.82 = 2,147,054.07/x
  3. Step 3: Cross multiply
    3,957,890.07x = 5,461,898.82 × 2,147,054.07
  4. Step 4: Simplify right side
    3,957,890.07x = 11,726,992,103,839.87
  5. Step 5: Solve for x
    x = 11,726,992,103,839.87/3,957,890.07
  6. Step 6: Final answer
    x = 2,962,940.33

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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.