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Finding the Fourth Proportional to 7,954.98, 11,928.40 and 3,020.86

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Solution

The fourth proportional to 7,954.98, 11,928.40 and 3,020.86 is: 4,529.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,954.98 : 11,928.40 = 3,020.86 : x
  2. Step 2: Convert to fraction form
    7,954.98/11,928.40 = 3,020.86/x
  3. Step 3: Cross multiply
    7,954.98x = 11,928.40 × 3,020.86
  4. Step 4: Simplify right side
    7,954.98x = 36,034,026.42
  5. Step 5: Solve for x
    x = 36,034,026.42/7,954.98
  6. Step 6: Final answer
    x = 4,529.74

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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.