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Finding the Fourth Proportional to 4,748.64, 7,105.14 and 3,290.64

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Solution

The fourth proportional to 4,748.64, 7,105.14 and 3,290.64 is: 4,923.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,748.64 : 7,105.14 = 3,290.64 : x
  2. Step 2: Convert to fraction form
    4,748.64/7,105.14 = 3,290.64/x
  3. Step 3: Cross multiply
    4,748.64x = 7,105.14 × 3,290.64
  4. Step 4: Simplify right side
    4,748.64x = 23,380,457.89
  5. Step 5: Solve for x
    x = 23,380,457.89/4,748.64
  6. Step 6: Final answer
    x = 4,923.61

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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.