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Finding the Fourth Proportional to 3,355.36, 5,029.86 and 2,119

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Solution

The fourth proportional to 3,355.36, 5,029.86 and 2,119 is: 3,176.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,355.36 : 5,029.86 = 2,119 : x
  2. Step 2: Convert to fraction form
    3,355.36/5,029.86 = 2,119/x
  3. Step 3: Cross multiply
    3,355.36x = 5,029.86 × 2,119
  4. Step 4: Simplify right side
    3,355.36x = 10,658,273.34
  5. Step 5: Solve for x
    x = 10,658,273.34/3,355.36
  6. Step 6: Final answer
    x = 3,176.49

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.