Home / 3,384.26-5,072.34-1,921.40

Finding the Fourth Proportional to 3,384.26, 5,072.34 and 1,921.40

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Solution

The fourth proportional to 3,384.26, 5,072.34 and 1,921.40 is: 2,879.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,384.26 : 5,072.34 = 1,921.40 : x
  2. Step 2: Convert to fraction form
    3,384.26/5,072.34 = 1,921.40/x
  3. Step 3: Cross multiply
    3,384.26x = 5,072.34 × 1,921.40
  4. Step 4: Simplify right side
    3,384.26x = 9,745,994.08
  5. Step 5: Solve for x
    x = 9,745,994.08/3,384.26
  6. Step 6: Final answer
    x = 2,879.80

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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.