Home / 2,779.36-4,166.85-1,391.99

Finding the Fourth Proportional to 2,779.36, 4,166.85 and 1,391.99

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Solution

The fourth proportional to 2,779.36, 4,166.85 and 1,391.99 is: 2,086.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,779.36 : 4,166.85 = 1,391.99 : x
  2. Step 2: Convert to fraction form
    2,779.36/4,166.85 = 1,391.99/x
  3. Step 3: Cross multiply
    2,779.36x = 4,166.85 × 1,391.99
  4. Step 4: Simplify right side
    2,779.36x = 5,800,223.95
  5. Step 5: Solve for x
    x = 5,800,223.95/2,779.36
  6. Step 6: Final answer
    x = 2,086.89

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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.