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Finding the Fourth Proportional to 4,758, 7,137.44 and 1,248.48

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Solution

The fourth proportional to 4,758, 7,137.44 and 1,248.48 is: 1,872.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,758 : 7,137.44 = 1,248.48 : x
  2. Step 2: Convert to fraction form
    4,758/7,137.44 = 1,248.48/x
  3. Step 3: Cross multiply
    4,758x = 7,137.44 × 1,248.48
  4. Step 4: Simplify right side
    4,758x = 8,910,951.09
  5. Step 5: Solve for x
    x = 8,910,951.09/4,758
  6. Step 6: Final answer
    x = 1,872.84

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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.