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Finding the Fourth Proportional to 4,815.74, 7,218.75 and 1,892.90

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Solution

The fourth proportional to 4,815.74, 7,218.75 and 1,892.90 is: 2,837.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,815.74 : 7,218.75 = 1,892.90 : x
  2. Step 2: Convert to fraction form
    4,815.74/7,218.75 = 1,892.90/x
  3. Step 3: Cross multiply
    4,815.74x = 7,218.75 × 1,892.90
  4. Step 4: Simplify right side
    4,815.74x = 13,664,371.88
  5. Step 5: Solve for x
    x = 13,664,371.88/4,815.74
  6. Step 6: Final answer
    x = 2,837.44

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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.