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Finding the Fourth Proportional to 3,203.96, 4,421.07 and 1,787.32

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Solution

The fourth proportional to 3,203.96, 4,421.07 and 1,787.32 is: 2,466.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,203.96 : 4,421.07 = 1,787.32 : x
  2. Step 2: Convert to fraction form
    3,203.96/4,421.07 = 1,787.32/x
  3. Step 3: Cross multiply
    3,203.96x = 4,421.07 × 1,787.32
  4. Step 4: Simplify right side
    3,203.96x = 7,901,855.78
  5. Step 5: Solve for x
    x = 7,901,855.78/3,203.96
  6. Step 6: Final answer
    x = 2,466.28

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.