Home / 7,988.28-11,980.09-3,057.54

Finding the Fourth Proportional to 7,988.28, 11,980.09 and 3,057.54

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Solution

The fourth proportional to 7,988.28, 11,980.09 and 3,057.54 is: 4,585.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,988.28 : 11,980.09 = 3,057.54 : x
  2. Step 2: Convert to fraction form
    7,988.28/11,980.09 = 3,057.54/x
  3. Step 3: Cross multiply
    7,988.28x = 11,980.09 × 3,057.54
  4. Step 4: Simplify right side
    7,988.28x = 36,629,604.38
  5. Step 5: Solve for x
    x = 36,629,604.38/7,988.28
  6. Step 6: Final answer
    x = 4,585.42

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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.