Home / 2,847.31-3,929.66-2,290.03

Finding the Fourth Proportional to 2,847.31, 3,929.66 and 2,290.03

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Solution

The fourth proportional to 2,847.31, 3,929.66 and 2,290.03 is: 3,160.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,847.31 : 3,929.66 = 2,290.03 : x
  2. Step 2: Convert to fraction form
    2,847.31/3,929.66 = 2,290.03/x
  3. Step 3: Cross multiply
    2,847.31x = 3,929.66 × 2,290.03
  4. Step 4: Simplify right side
    2,847.31x = 8,999,039.29
  5. Step 5: Solve for x
    x = 8,999,039.29/2,847.31
  6. Step 6: Final answer
    x = 3,160.54

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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.