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Finding the Fourth Proportional to 9,679.88, 14,514.42 and 4,738.88

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Solution

The fourth proportional to 9,679.88, 14,514.42 and 4,738.88 is: 7,105.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,679.88 : 14,514.42 = 4,738.88 : x
  2. Step 2: Convert to fraction form
    9,679.88/14,514.42 = 4,738.88/x
  3. Step 3: Cross multiply
    9,679.88x = 14,514.42 × 4,738.88
  4. Step 4: Simplify right side
    9,679.88x = 68,782,094.65
  5. Step 5: Solve for x
    x = 68,782,094.65/9,679.88
  6. Step 6: Final answer
    x = 7,105.68

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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.