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Finding the Fourth Proportional to 8,466.90, 12,699.81 and 3,787.26

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Solution

The fourth proportional to 8,466.90, 12,699.81 and 3,787.26 is: 5,680.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,466.90 : 12,699.81 = 3,787.26 : x
  2. Step 2: Convert to fraction form
    8,466.90/12,699.81 = 3,787.26/x
  3. Step 3: Cross multiply
    8,466.90x = 12,699.81 × 3,787.26
  4. Step 4: Simplify right side
    8,466.90x = 48,097,482.42
  5. Step 5: Solve for x
    x = 48,097,482.42/8,466.90
  6. Step 6: Final answer
    x = 5,680.65

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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.