Home / 3,379.21-5,068.84-1,187.92

Finding the Fourth Proportional to 3,379.21, 5,068.84 and 1,187.92

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Solution

The fourth proportional to 3,379.21, 5,068.84 and 1,187.92 is: 1,781.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,379.21 : 5,068.84 = 1,187.92 : x
  2. Step 2: Convert to fraction form
    3,379.21/5,068.84 = 1,187.92/x
  3. Step 3: Cross multiply
    3,379.21x = 5,068.84 × 1,187.92
  4. Step 4: Simplify right side
    3,379.21x = 6,021,376.41
  5. Step 5: Solve for x
    x = 6,021,376.41/3,379.21
  6. Step 6: Final answer
    x = 1,781.89

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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.