Home / 7,976.96-11,960.04-2,780

Finding the Fourth Proportional to 7,976.96, 11,960.04 and 2,780

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Solution

The fourth proportional to 7,976.96, 11,960.04 and 2,780 is: 4,168.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,976.96 : 11,960.04 = 2,780 : x
  2. Step 2: Convert to fraction form
    7,976.96/11,960.04 = 2,780/x
  3. Step 3: Cross multiply
    7,976.96x = 11,960.04 × 2,780
  4. Step 4: Simplify right side
    7,976.96x = 33,248,911.20
  5. Step 5: Solve for x
    x = 33,248,911.20/7,976.96
  6. Step 6: Final answer
    x = 4,168.12

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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.