Home / 3,990,591.62-5,507,016.43-2,155,049.81

Finding the Fourth Proportional to 3,990,591.62, 5,507,016.43 and 2,155,049.81

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Solution

The fourth proportional to 3,990,591.62, 5,507,016.43 and 2,155,049.81 is: 2,973,968.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,990,591.62 : 5,507,016.43 = 2,155,049.81 : x
  2. Step 2: Convert to fraction form
    3,990,591.62/5,507,016.43 = 2,155,049.81/x
  3. Step 3: Cross multiply
    3,990,591.62x = 5,507,016.43 × 2,155,049.81
  4. Step 4: Simplify right side
    3,990,591.62x = 11,867,894,672,828.05
  5. Step 5: Solve for x
    x = 11,867,894,672,828.05/3,990,591.62
  6. Step 6: Final answer
    x = 2,973,968.72

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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.