Home / 2,379.86-3,283.68-1,331.90

Finding the Fourth Proportional to 2,379.86, 3,283.68 and 1,331.90

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Solution

The fourth proportional to 2,379.86, 3,283.68 and 1,331.90 is: 1,837.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,379.86 : 3,283.68 = 1,331.90 : x
  2. Step 2: Convert to fraction form
    2,379.86/3,283.68 = 1,331.90/x
  3. Step 3: Cross multiply
    2,379.86x = 3,283.68 × 1,331.90
  4. Step 4: Simplify right side
    2,379.86x = 4,373,533.39
  5. Step 5: Solve for x
    x = 4,373,533.39/2,379.86
  6. Step 6: Final answer
    x = 1,837.73

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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.