Home / 7,680.09-11,521.97-2,485.97

Finding the Fourth Proportional to 7,680.09, 11,521.97 and 2,485.97

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Solution

The fourth proportional to 7,680.09, 11,521.97 and 2,485.97 is: 3,729.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,680.09 : 11,521.97 = 2,485.97 : x
  2. Step 2: Convert to fraction form
    7,680.09/11,521.97 = 2,485.97/x
  3. Step 3: Cross multiply
    7,680.09x = 11,521.97 × 2,485.97
  4. Step 4: Simplify right side
    7,680.09x = 28,643,254.25
  5. Step 5: Solve for x
    x = 28,643,254.25/7,680.09
  6. Step 6: Final answer
    x = 3,729.54

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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.