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Finding the Fourth Proportional to 4,803.30, 7,202.79 and 1,991.79

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Solution

The fourth proportional to 4,803.30, 7,202.79 and 1,991.79 is: 2,986.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,803.30 : 7,202.79 = 1,991.79 : x
  2. Step 2: Convert to fraction form
    4,803.30/7,202.79 = 1,991.79/x
  3. Step 3: Cross multiply
    4,803.30x = 7,202.79 × 1,991.79
  4. Step 4: Simplify right side
    4,803.30x = 14,346,445.09
  5. Step 5: Solve for x
    x = 14,346,445.09/4,803.30
  6. Step 6: Final answer
    x = 2,986.79

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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.