Home / 2,789.12-4,181.65-1,693.31

Finding the Fourth Proportional to 2,789.12, 4,181.65 and 1,693.31

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Solution

The fourth proportional to 2,789.12, 4,181.65 and 1,693.31 is: 2,538.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,789.12 : 4,181.65 = 1,693.31 : x
  2. Step 2: Convert to fraction form
    2,789.12/4,181.65 = 1,693.31/x
  3. Step 3: Cross multiply
    2,789.12x = 4,181.65 × 1,693.31
  4. Step 4: Simplify right side
    2,789.12x = 7,080,804.62
  5. Step 5: Solve for x
    x = 7,080,804.62/2,789.12
  6. Step 6: Final answer
    x = 2,538.72

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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.