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Finding the Fourth Proportional to 4,993.24, 7,490.82 and 1,915

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Solution

The fourth proportional to 4,993.24, 7,490.82 and 1,915 is: 2,872.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,993.24 : 7,490.82 = 1,915 : x
  2. Step 2: Convert to fraction form
    4,993.24/7,490.82 = 1,915/x
  3. Step 3: Cross multiply
    4,993.24x = 7,490.82 × 1,915
  4. Step 4: Simplify right side
    4,993.24x = 14,344,920.30
  5. Step 5: Solve for x
    x = 14,344,920.30/4,993.24
  6. Step 6: Final answer
    x = 2,872.87

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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.