Home / 3,318.84-4,579.92-1,921.50

Finding the Fourth Proportional to 3,318.84, 4,579.92 and 1,921.50

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Solution

The fourth proportional to 3,318.84, 4,579.92 and 1,921.50 is: 2,651.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,318.84 : 4,579.92 = 1,921.50 : x
  2. Step 2: Convert to fraction form
    3,318.84/4,579.92 = 1,921.50/x
  3. Step 3: Cross multiply
    3,318.84x = 4,579.92 × 1,921.50
  4. Step 4: Simplify right side
    3,318.84x = 8,800,316.28
  5. Step 5: Solve for x
    x = 8,800,316.28/3,318.84
  6. Step 6: Final answer
    x = 2,651.62

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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.