Home / 3,881,976.72-5,357,056.09-2,115,890.25

Finding the Fourth Proportional to 3,881,976.72, 5,357,056.09 and 2,115,890.25

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Solution

The fourth proportional to 3,881,976.72, 5,357,056.09 and 2,115,890.25 is: 2,919,889.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,881,976.72 : 5,357,056.09 = 2,115,890.25 : x
  2. Step 2: Convert to fraction form
    3,881,976.72/5,357,056.09 = 2,115,890.25/x
  3. Step 3: Cross multiply
    3,881,976.72x = 5,357,056.09 × 2,115,890.25
  4. Step 4: Simplify right side
    3,881,976.72x = 11,334,942,749,534.12
  5. Step 5: Solve for x
    x = 11,334,942,749,534.12/3,881,976.72
  6. Step 6: Final answer
    x = 2,919,889.42

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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.