Home / 7,980.32-11,968.68-3,048.20

Finding the Fourth Proportional to 7,980.32, 11,968.68 and 3,048.20

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Solution

The fourth proportional to 7,980.32, 11,968.68 and 3,048.20 is: 4,571.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,980.32 : 11,968.68 = 3,048.20 : x
  2. Step 2: Convert to fraction form
    7,980.32/11,968.68 = 3,048.20/x
  3. Step 3: Cross multiply
    7,980.32x = 11,968.68 × 3,048.20
  4. Step 4: Simplify right side
    7,980.32x = 36,482,930.38
  5. Step 5: Solve for x
    x = 36,482,930.38/7,980.32
  6. Step 6: Final answer
    x = 4,571.61

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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.