Home / 2,987.27-4,481.31-1,039.22

Finding the Fourth Proportional to 2,987.27, 4,481.31 and 1,039.22

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Solution

The fourth proportional to 2,987.27, 4,481.31 and 1,039.22 is: 1,558.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,987.27 : 4,481.31 = 1,039.22 : x
  2. Step 2: Convert to fraction form
    2,987.27/4,481.31 = 1,039.22/x
  3. Step 3: Cross multiply
    2,987.27x = 4,481.31 × 1,039.22
  4. Step 4: Simplify right side
    2,987.27x = 4,657,039.38
  5. Step 5: Solve for x
    x = 4,657,039.38/2,987.27
  6. Step 6: Final answer
    x = 1,558.96

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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.