Home / 2,842.71-4,256.19-2,147.28

Finding the Fourth Proportional to 2,842.71, 4,256.19 and 2,147.28

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Solution

The fourth proportional to 2,842.71, 4,256.19 and 2,147.28 is: 3,214.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,842.71 : 4,256.19 = 2,147.28 : x
  2. Step 2: Convert to fraction form
    2,842.71/4,256.19 = 2,147.28/x
  3. Step 3: Cross multiply
    2,842.71x = 4,256.19 × 2,147.28
  4. Step 4: Simplify right side
    2,842.71x = 9,139,231.66
  5. Step 5: Solve for x
    x = 9,139,231.66/2,842.71
  6. Step 6: Final answer
    x = 3,214.97

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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.