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Finding the Fourth Proportional to 3,203.82, 4,421.07 and 1,787.72

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Solution

The fourth proportional to 3,203.82, 4,421.07 and 1,787.72 is: 2,466.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,203.82 : 4,421.07 = 1,787.72 : x
  2. Step 2: Convert to fraction form
    3,203.82/4,421.07 = 1,787.72/x
  3. Step 3: Cross multiply
    3,203.82x = 4,421.07 × 1,787.72
  4. Step 4: Simplify right side
    3,203.82x = 7,903,613.16
  5. Step 5: Solve for x
    x = 7,903,613.16/3,203.82
  6. Step 6: Final answer
    x = 2,466.93

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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.