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Finding the Fourth Proportional to 3,294.87, 4,918.80 and 3,179.53

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Solution

The fourth proportional to 3,294.87, 4,918.80 and 3,179.53 is: 4,746.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,294.87 : 4,918.80 = 3,179.53 : x
  2. Step 2: Convert to fraction form
    3,294.87/4,918.80 = 3,179.53/x
  3. Step 3: Cross multiply
    3,294.87x = 4,918.80 × 3,179.53
  4. Step 4: Simplify right side
    3,294.87x = 15,639,472.16
  5. Step 5: Solve for x
    x = 15,639,472.16/3,294.87
  6. Step 6: Final answer
    x = 4,746.61

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.