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Finding the Fourth Proportional to 5,480.43, 8,213.07 and 4,748.19

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Solution

The fourth proportional to 5,480.43, 8,213.07 and 4,748.19 is: 7,115.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,480.43 : 8,213.07 = 4,748.19 : x
  2. Step 2: Convert to fraction form
    5,480.43/8,213.07 = 4,748.19/x
  3. Step 3: Cross multiply
    5,480.43x = 8,213.07 × 4,748.19
  4. Step 4: Simplify right side
    5,480.43x = 38,997,216.84
  5. Step 5: Solve for x
    x = 38,997,216.84/5,480.43
  6. Step 6: Final answer
    x = 7,115.72

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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.