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Finding the Fourth Proportional to 4,801.60, 7,192.80 and 2,747.20

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Solution

The fourth proportional to 4,801.60, 7,192.80 and 2,747.20 is: 4,115.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,801.60 : 7,192.80 = 2,747.20 : x
  2. Step 2: Convert to fraction form
    4,801.60/7,192.80 = 2,747.20/x
  3. Step 3: Cross multiply
    4,801.60x = 7,192.80 × 2,747.20
  4. Step 4: Simplify right side
    4,801.60x = 19,760,060.16
  5. Step 5: Solve for x
    x = 19,760,060.16/4,801.60
  6. Step 6: Final answer
    x = 4,115.31

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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.