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Finding the Fourth Proportional to 4,787.28, 7,174.44 and 2,480.40

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Solution

The fourth proportional to 4,787.28, 7,174.44 and 2,480.40 is: 3,717.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,787.28 : 7,174.44 = 2,480.40 : x
  2. Step 2: Convert to fraction form
    4,787.28/7,174.44 = 2,480.40/x
  3. Step 3: Cross multiply
    4,787.28x = 7,174.44 × 2,480.40
  4. Step 4: Simplify right side
    4,787.28x = 17,795,480.98
  5. Step 5: Solve for x
    x = 17,795,480.98/4,787.28
  6. Step 6: Final answer
    x = 3,717.24

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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.