Home / 4,748.12-7,121.94-1,628.42

Finding the Fourth Proportional to 4,748.12, 7,121.94 and 1,628.42

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Solution

The fourth proportional to 4,748.12, 7,121.94 and 1,628.42 is: 2,442.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,748.12 : 7,121.94 = 1,628.42 : x
  2. Step 2: Convert to fraction form
    4,748.12/7,121.94 = 1,628.42/x
  3. Step 3: Cross multiply
    4,748.12x = 7,121.94 × 1,628.42
  4. Step 4: Simplify right side
    4,748.12x = 11,597,509.53
  5. Step 5: Solve for x
    x = 11,597,509.53/4,748.12
  6. Step 6: Final answer
    x = 2,442.55

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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.