Home / 7,928.09-11,889.07-2,380.13

Finding the Fourth Proportional to 7,928.09, 11,889.07 and 2,380.13

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Solution

The fourth proportional to 7,928.09, 11,889.07 and 2,380.13 is: 3,569.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,928.09 : 11,889.07 = 2,380.13 : x
  2. Step 2: Convert to fraction form
    7,928.09/11,889.07 = 2,380.13/x
  3. Step 3: Cross multiply
    7,928.09x = 11,889.07 × 2,380.13
  4. Step 4: Simplify right side
    7,928.09x = 28,297,466.78
  5. Step 5: Solve for x
    x = 28,297,466.78/7,928.09
  6. Step 6: Final answer
    x = 3,569.27

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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.