Home / 3,299.12-4,949.94-1,985.36

Finding the Fourth Proportional to 3,299.12, 4,949.94 and 1,985.36

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Solution

The fourth proportional to 3,299.12, 4,949.94 and 1,985.36 is: 2,978.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,299.12 : 4,949.94 = 1,985.36 : x
  2. Step 2: Convert to fraction form
    3,299.12/4,949.94 = 1,985.36/x
  3. Step 3: Cross multiply
    3,299.12x = 4,949.94 × 1,985.36
  4. Step 4: Simplify right side
    3,299.12x = 9,827,412.88
  5. Step 5: Solve for x
    x = 9,827,412.88/3,299.12
  6. Step 6: Final answer
    x = 2,978.80

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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.