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Finding the Fourth Proportional to 3,326.43, 4,977.11 and 1,987.27

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Solution

The fourth proportional to 3,326.43, 4,977.11 and 1,987.27 is: 2,973.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,326.43 : 4,977.11 = 1,987.27 : x
  2. Step 2: Convert to fraction form
    3,326.43/4,977.11 = 1,987.27/x
  3. Step 3: Cross multiply
    3,326.43x = 4,977.11 × 1,987.27
  4. Step 4: Simplify right side
    3,326.43x = 9,890,853.92
  5. Step 5: Solve for x
    x = 9,890,853.92/3,326.43
  6. Step 6: Final answer
    x = 2,973.41

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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.