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Finding the Fourth Proportional to 2,049.71, 3,074.56 and 956.21

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Solution

The fourth proportional to 2,049.71, 3,074.56 and 956.21 is: 1,434.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,049.71 : 3,074.56 = 956.21 : x
  2. Step 2: Convert to fraction form
    2,049.71/3,074.56 = 956.21/x
  3. Step 3: Cross multiply
    2,049.71x = 3,074.56 × 956.21
  4. Step 4: Simplify right side
    2,049.71x = 2,939,907.25
  5. Step 5: Solve for x
    x = 2,939,907.25/2,049.71
  6. Step 6: Final answer
    x = 1,434.31

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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.