Home / 2,779.67-4,172.36-1,861.64

Finding the Fourth Proportional to 2,779.67, 4,172.36 and 1,861.64

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Solution

The fourth proportional to 2,779.67, 4,172.36 and 1,861.64 is: 2,794.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,779.67 : 4,172.36 = 1,861.64 : x
  2. Step 2: Convert to fraction form
    2,779.67/4,172.36 = 1,861.64/x
  3. Step 3: Cross multiply
    2,779.67x = 4,172.36 × 1,861.64
  4. Step 4: Simplify right side
    2,779.67x = 7,767,424.73
  5. Step 5: Solve for x
    x = 7,767,424.73/2,779.67
  6. Step 6: Final answer
    x = 2,794.37

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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.