Home / 2,842.38-3,919.42-1,779.76

Finding the Fourth Proportional to 2,842.38, 3,919.42 and 1,779.76

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Solution

The fourth proportional to 2,842.38, 3,919.42 and 1,779.76 is: 2,454.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,842.38 : 3,919.42 = 1,779.76 : x
  2. Step 2: Convert to fraction form
    2,842.38/3,919.42 = 1,779.76/x
  3. Step 3: Cross multiply
    2,842.38x = 3,919.42 × 1,779.76
  4. Step 4: Simplify right side
    2,842.38x = 6,975,626.94
  5. Step 5: Solve for x
    x = 6,975,626.94/2,842.38
  6. Step 6: Final answer
    x = 2,454.15

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1.5x scale

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.