Home / 7,680.44-11,517.56-2,999.78

Finding the Fourth Proportional to 7,680.44, 11,517.56 and 2,999.78

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Solution

The fourth proportional to 7,680.44, 11,517.56 and 2,999.78 is: 4,498.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,680.44 : 11,517.56 = 2,999.78 : x
  2. Step 2: Convert to fraction form
    7,680.44/11,517.56 = 2,999.78/x
  3. Step 3: Cross multiply
    7,680.44x = 11,517.56 × 2,999.78
  4. Step 4: Simplify right side
    7,680.44x = 34,550,146.14
  5. Step 5: Solve for x
    x = 34,550,146.14/7,680.44
  6. Step 6: Final answer
    x = 4,498.46

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1.5x scale

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.