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Finding the Fourth Proportional to 3,879,365.03, 5,353,689.84 and 2,160,485.54

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Solution

The fourth proportional to 3,879,365.03, 5,353,689.84 and 2,160,485.54 is: 2,981,562.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,879,365.03 : 5,353,689.84 = 2,160,485.54 : x
  2. Step 2: Convert to fraction form
    3,879,365.03/5,353,689.84 = 2,160,485.54/x
  3. Step 3: Cross multiply
    3,879,365.03x = 5,353,689.84 × 2,160,485.54
  4. Step 4: Simplify right side
    3,879,365.03x = 11,566,569,500,285.49
  5. Step 5: Solve for x
    x = 11,566,569,500,285.49/3,879,365.03
  6. Step 6: Final answer
    x = 2,981,562.55

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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.