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Finding the Fourth Proportional to 7,112.80, 10,653.84 and 5,960.80

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Solution

The fourth proportional to 7,112.80, 10,653.84 and 5,960.80 is: 8,928.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,112.80 : 10,653.84 = 5,960.80 : x
  2. Step 2: Convert to fraction form
    7,112.80/10,653.84 = 5,960.80/x
  3. Step 3: Cross multiply
    7,112.80x = 10,653.84 × 5,960.80
  4. Step 4: Simplify right side
    7,112.80x = 63,505,409.47
  5. Step 5: Solve for x
    x = 63,505,409.47/7,112.80
  6. Step 6: Final answer
    x = 8,928.33

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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.