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Finding the Fourth Proportional to 7,648.58, 11,479.09 and 3,951.89

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Solution

The fourth proportional to 7,648.58, 11,479.09 and 3,951.89 is: 5,931.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,648.58 : 11,479.09 = 3,951.89 : x
  2. Step 2: Convert to fraction form
    7,648.58/11,479.09 = 3,951.89/x
  3. Step 3: Cross multiply
    7,648.58x = 11,479.09 × 3,951.89
  4. Step 4: Simplify right side
    7,648.58x = 45,364,100.98
  5. Step 5: Solve for x
    x = 45,364,100.98/7,648.58
  6. Step 6: Final answer
    x = 5,931.05

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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.