Home / 3,187.05-4,779.86-1,211.98

Finding the Fourth Proportional to 3,187.05, 4,779.86 and 1,211.98

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Solution

The fourth proportional to 3,187.05, 4,779.86 and 1,211.98 is: 1,817.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,187.05 : 4,779.86 = 1,211.98 : x
  2. Step 2: Convert to fraction form
    3,187.05/4,779.86 = 1,211.98/x
  3. Step 3: Cross multiply
    3,187.05x = 4,779.86 × 1,211.98
  4. Step 4: Simplify right side
    3,187.05x = 5,793,076.71
  5. Step 5: Solve for x
    x = 5,793,076.71/3,187.05
  6. Step 6: Final answer
    x = 1,817.69

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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.