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Finding the Fourth Proportional to 7,951.76, 11,928.18 and 2,108.18

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Solution

The fourth proportional to 7,951.76, 11,928.18 and 2,108.18 is: 3,162.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,951.76 : 11,928.18 = 2,108.18 : x
  2. Step 2: Convert to fraction form
    7,951.76/11,928.18 = 2,108.18/x
  3. Step 3: Cross multiply
    7,951.76x = 11,928.18 × 2,108.18
  4. Step 4: Simplify right side
    7,951.76x = 25,146,750.51
  5. Step 5: Solve for x
    x = 25,146,750.51/7,951.76
  6. Step 6: Final answer
    x = 3,162.41

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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.