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Finding the Fourth Proportional to 5,245.97, 7,242.45 and 3,479.99

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Solution

The fourth proportional to 5,245.97, 7,242.45 and 3,479.99 is: 4,804.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,245.97 : 7,242.45 = 3,479.99 : x
  2. Step 2: Convert to fraction form
    5,245.97/7,242.45 = 3,479.99/x
  3. Step 3: Cross multiply
    5,245.97x = 7,242.45 × 3,479.99
  4. Step 4: Simplify right side
    5,245.97x = 25,203,653.58
  5. Step 5: Solve for x
    x = 25,203,653.58/5,245.97
  6. Step 6: Final answer
    x = 4,804.38

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.