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Finding the Fourth Proportional to 3,320.46, 4,979.01 and 1,859.22

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Solution

The fourth proportional to 3,320.46, 4,979.01 and 1,859.22 is: 2,787.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,320.46 : 4,979.01 = 1,859.22 : x
  2. Step 2: Convert to fraction form
    3,320.46/4,979.01 = 1,859.22/x
  3. Step 3: Cross multiply
    3,320.46x = 4,979.01 × 1,859.22
  4. Step 4: Simplify right side
    3,320.46x = 9,257,074.97
  5. Step 5: Solve for x
    x = 9,257,074.97/3,320.46
  6. Step 6: Final answer
    x = 2,787.89

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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.