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Finding the Fourth Proportional to 4,915, 7,369.99 and 1,626.91

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Solution

The fourth proportional to 4,915, 7,369.99 and 1,626.91 is: 2,439.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,915 : 7,369.99 = 1,626.91 : x
  2. Step 2: Convert to fraction form
    4,915/7,369.99 = 1,626.91/x
  3. Step 3: Cross multiply
    4,915x = 7,369.99 × 1,626.91
  4. Step 4: Simplify right side
    4,915x = 11,990,310.43
  5. Step 5: Solve for x
    x = 11,990,310.43/4,915
  6. Step 6: Final answer
    x = 2,439.53

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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.