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Finding the Fourth Proportional to 4,751.33, 7,127.80 and 1,631.63

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Solution

The fourth proportional to 4,751.33, 7,127.80 and 1,631.63 is: 2,447.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,751.33 : 7,127.80 = 1,631.63 : x
  2. Step 2: Convert to fraction form
    4,751.33/7,127.80 = 1,631.63/x
  3. Step 3: Cross multiply
    4,751.33x = 7,127.80 × 1,631.63
  4. Step 4: Simplify right side
    4,751.33x = 11,629,946.05
  5. Step 5: Solve for x
    x = 11,629,946.05/4,751.33
  6. Step 6: Final answer
    x = 2,447.73

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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.