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Finding the Fourth Proportional to 5,179.43, 7,769.42 and 1,482.20

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Solution

The fourth proportional to 5,179.43, 7,769.42 and 1,482.20 is: 2,223.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,179.43 : 7,769.42 = 1,482.20 : x
  2. Step 2: Convert to fraction form
    5,179.43/7,769.42 = 1,482.20/x
  3. Step 3: Cross multiply
    5,179.43x = 7,769.42 × 1,482.20
  4. Step 4: Simplify right side
    5,179.43x = 11,515,788.07
  5. Step 5: Solve for x
    x = 11,515,788.07/5,179.43
  6. Step 6: Final answer
    x = 2,223.37

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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.