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Finding the Fourth Proportional to 3,200.78, 4,797.13 and 1,716.31

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Solution

The fourth proportional to 3,200.78, 4,797.13 and 1,716.31 is: 2,572.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,200.78 : 4,797.13 = 1,716.31 : x
  2. Step 2: Convert to fraction form
    3,200.78/4,797.13 = 1,716.31/x
  3. Step 3: Cross multiply
    3,200.78x = 4,797.13 × 1,716.31
  4. Step 4: Simplify right side
    3,200.78x = 8,233,362.19
  5. Step 5: Solve for x
    x = 8,233,362.19/3,200.78
  6. Step 6: Final answer
    x = 2,572.30

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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.