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Finding the Fourth Proportional to 3,518.82, 5,281.11 and 1,787.94

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Solution

The fourth proportional to 3,518.82, 5,281.11 and 1,787.94 is: 2,683.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,518.82 : 5,281.11 = 1,787.94 : x
  2. Step 2: Convert to fraction form
    3,518.82/5,281.11 = 1,787.94/x
  3. Step 3: Cross multiply
    3,518.82x = 5,281.11 × 1,787.94
  4. Step 4: Simplify right side
    3,518.82x = 9,442,307.81
  5. Step 5: Solve for x
    x = 9,442,307.81/3,518.82
  6. Step 6: Final answer
    x = 2,683.37

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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.