Home / 7,988.56-11,987.92-3,371.60

Finding the Fourth Proportional to 7,988.56, 11,987.92 and 3,371.60

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Solution

The fourth proportional to 7,988.56, 11,987.92 and 3,371.60 is: 5,059.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,988.56 : 11,987.92 = 3,371.60 : x
  2. Step 2: Convert to fraction form
    7,988.56/11,987.92 = 3,371.60/x
  3. Step 3: Cross multiply
    7,988.56x = 11,987.92 × 3,371.60
  4. Step 4: Simplify right side
    7,988.56x = 40,418,471.07
  5. Step 5: Solve for x
    x = 40,418,471.07/7,988.56
  6. Step 6: Final answer
    x = 5,059.54

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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.