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Finding the Fourth Proportional to 7,524.72, 11,279.16 and 3,620.88

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Solution

The fourth proportional to 7,524.72, 11,279.16 and 3,620.88 is: 5,427.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,524.72 : 11,279.16 = 3,620.88 : x
  2. Step 2: Convert to fraction form
    7,524.72/11,279.16 = 3,620.88/x
  3. Step 3: Cross multiply
    7,524.72x = 11,279.16 × 3,620.88
  4. Step 4: Simplify right side
    7,524.72x = 40,840,484.86
  5. Step 5: Solve for x
    x = 40,840,484.86/7,524.72
  6. Step 6: Final answer
    x = 5,427.51

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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.