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Finding the Fourth Proportional to 8,630.88, 12,946.23 and 2,787.36

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Solution

The fourth proportional to 8,630.88, 12,946.23 and 2,787.36 is: 4,181.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,630.88 : 12,946.23 = 2,787.36 : x
  2. Step 2: Convert to fraction form
    8,630.88/12,946.23 = 2,787.36/x
  3. Step 3: Cross multiply
    8,630.88x = 12,946.23 × 2,787.36
  4. Step 4: Simplify right side
    8,630.88x = 36,085,803.65
  5. Step 5: Solve for x
    x = 36,085,803.65/8,630.88
  6. Step 6: Final answer
    x = 4,181.01

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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.