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Finding the Fourth Proportional to 7,659.45, 11,479.59 and 4,149.45

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Solution

The fourth proportional to 7,659.45, 11,479.59 and 4,149.45 is: 6,218.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,659.45 : 11,479.59 = 4,149.45 : x
  2. Step 2: Convert to fraction form
    7,659.45/11,479.59 = 4,149.45/x
  3. Step 3: Cross multiply
    7,659.45x = 11,479.59 × 4,149.45
  4. Step 4: Simplify right side
    7,659.45x = 47,633,984.73
  5. Step 5: Solve for x
    x = 47,633,984.73/7,659.45
  6. Step 6: Final answer
    x = 6,218.98

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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.