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Finding the Fourth Proportional to 3,763.89, 5,645.97 and 1,423.65

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Solution

The fourth proportional to 3,763.89, 5,645.97 and 1,423.65 is: 2,135.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,763.89 : 5,645.97 = 1,423.65 : x
  2. Step 2: Convert to fraction form
    3,763.89/5,645.97 = 1,423.65/x
  3. Step 3: Cross multiply
    3,763.89x = 5,645.97 × 1,423.65
  4. Step 4: Simplify right side
    3,763.89x = 8,037,885.19
  5. Step 5: Solve for x
    x = 8,037,885.19/3,763.89
  6. Step 6: Final answer
    x = 2,135.53

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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.