Home / 2,779.16-3,834.05-1,729.40

Finding the Fourth Proportional to 2,779.16, 3,834.05 and 1,729.40

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Solution

The fourth proportional to 2,779.16, 3,834.05 and 1,729.40 is: 2,385.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,779.16 : 3,834.05 = 1,729.40 : x
  2. Step 2: Convert to fraction form
    2,779.16/3,834.05 = 1,729.40/x
  3. Step 3: Cross multiply
    2,779.16x = 3,834.05 × 1,729.40
  4. Step 4: Simplify right side
    2,779.16x = 6,630,578.25
  5. Step 5: Solve for x
    x = 6,630,578.25/2,779.16
  6. Step 6: Final answer
    x = 2,385.83

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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.