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Finding the Fourth Proportional to 3,750.63, 5,621.46 and 1,668.28

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Solution

The fourth proportional to 3,750.63, 5,621.46 and 1,668.28 is: 2,500.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,750.63 : 5,621.46 = 1,668.28 : x
  2. Step 2: Convert to fraction form
    3,750.63/5,621.46 = 1,668.28/x
  3. Step 3: Cross multiply
    3,750.63x = 5,621.46 × 1,668.28
  4. Step 4: Simplify right side
    3,750.63x = 9,378,169.29
  5. Step 5: Solve for x
    x = 9,378,169.29/3,750.63
  6. Step 6: Final answer
    x = 2,500.43

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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.