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Finding the Fourth Proportional to 8,787.72, 12,121.46 and 6,134.16

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Solution

The fourth proportional to 8,787.72, 12,121.46 and 6,134.16 is: 8,461.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,787.72 : 12,121.46 = 6,134.16 : x
  2. Step 2: Convert to fraction form
    8,787.72/12,121.46 = 6,134.16/x
  3. Step 3: Cross multiply
    8,787.72x = 12,121.46 × 6,134.16
  4. Step 4: Simplify right side
    8,787.72x = 74,354,944.40
  5. Step 5: Solve for x
    x = 74,354,944.40/8,787.72
  6. Step 6: Final answer
    x = 8,461.23

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