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Finding the Fourth Proportional to 3,320.33, 4,978.80 and 1,933.94

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Solution

The fourth proportional to 3,320.33, 4,978.80 and 1,933.94 is: 2,899.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,320.33 : 4,978.80 = 1,933.94 : x
  2. Step 2: Convert to fraction form
    3,320.33/4,978.80 = 1,933.94/x
  3. Step 3: Cross multiply
    3,320.33x = 4,978.80 × 1,933.94
  4. Step 4: Simplify right side
    3,320.33x = 9,628,712.92
  5. Step 5: Solve for x
    x = 9,628,712.92/3,320.33
  6. Step 6: Final answer
    x = 2,899.93

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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.