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Finding the Fourth Proportional to 4,739.88, 7,107.66 and 2,792.64

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Solution

The fourth proportional to 4,739.88, 7,107.66 and 2,792.64 is: 4,187.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,739.88 : 7,107.66 = 2,792.64 : x
  2. Step 2: Convert to fraction form
    4,739.88/7,107.66 = 2,792.64/x
  3. Step 3: Cross multiply
    4,739.88x = 7,107.66 × 2,792.64
  4. Step 4: Simplify right side
    4,739.88x = 19,849,135.62
  5. Step 5: Solve for x
    x = 19,849,135.62/4,739.88
  6. Step 6: Final answer
    x = 4,187.69

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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.