Home / 2,779.85-3,836.43-1,585.20

Finding the Fourth Proportional to 2,779.85, 3,836.43 and 1,585.20

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Solution

The fourth proportional to 2,779.85, 3,836.43 and 1,585.20 is: 2,187.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,779.85 : 3,836.43 = 1,585.20 : x
  2. Step 2: Convert to fraction form
    2,779.85/3,836.43 = 1,585.20/x
  3. Step 3: Cross multiply
    2,779.85x = 3,836.43 × 1,585.20
  4. Step 4: Simplify right side
    2,779.85x = 6,081,508.84
  5. Step 5: Solve for x
    x = 6,081,508.84/2,779.85
  6. Step 6: Final answer
    x = 2,187.71

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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.