Home / 2,379.84-3,284.23-1,331.90

Finding the Fourth Proportional to 2,379.84, 3,284.23 and 1,331.90

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Solution

The fourth proportional to 2,379.84, 3,284.23 and 1,331.90 is: 1,838.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,379.84 : 3,284.23 = 1,331.90 : x
  2. Step 2: Convert to fraction form
    2,379.84/3,284.23 = 1,331.90/x
  3. Step 3: Cross multiply
    2,379.84x = 3,284.23 × 1,331.90
  4. Step 4: Simplify right side
    2,379.84x = 4,374,269.15
  5. Step 5: Solve for x
    x = 4,374,269.15/2,379.84
  6. Step 6: Final answer
    x = 1,838.05

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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.