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Finding the Fourth Proportional to 3,769,894.57, 5,202,234.52 and 2,115,888.01

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Solution

The fourth proportional to 3,769,894.57, 5,202,234.52 and 2,115,888.01 is: 2,919,801.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,769,894.57 : 5,202,234.52 = 2,115,888.01 : x
  2. Step 2: Convert to fraction form
    3,769,894.57/5,202,234.52 = 2,115,888.01/x
  3. Step 3: Cross multiply
    3,769,894.57x = 5,202,234.52 × 2,115,888.01
  4. Step 4: Simplify right side
    3,769,894.57x = 11,007,345,646,076.10
  5. Step 5: Solve for x
    x = 11,007,345,646,076.10/3,769,894.57
  6. Step 6: Final answer
    x = 2,919,801.98

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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.