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Finding the Fourth Proportional to 7,951.52, 11,928.59 and 2,687.03

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Solution

The fourth proportional to 7,951.52, 11,928.59 and 2,687.03 is: 4,030.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,951.52 : 11,928.59 = 2,687.03 : x
  2. Step 2: Convert to fraction form
    7,951.52/11,928.59 = 2,687.03/x
  3. Step 3: Cross multiply
    7,951.52x = 11,928.59 × 2,687.03
  4. Step 4: Simplify right side
    7,951.52x = 32,052,479.19
  5. Step 5: Solve for x
    x = 32,052,479.19/7,951.52
  6. Step 6: Final answer
    x = 4,030.99

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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.