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Finding the Fourth Proportional to 2,787.61, 4,180.53 and 1,008.44

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Solution

The fourth proportional to 2,787.61, 4,180.53 and 1,008.44 is: 1,512.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,787.61 : 4,180.53 = 1,008.44 : x
  2. Step 2: Convert to fraction form
    2,787.61/4,180.53 = 1,008.44/x
  3. Step 3: Cross multiply
    2,787.61x = 4,180.53 × 1,008.44
  4. Step 4: Simplify right side
    2,787.61x = 4,215,792.77
  5. Step 5: Solve for x
    x = 4,215,792.77/2,787.61
  6. Step 6: Final answer
    x = 1,512.34

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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.