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Finding the Fourth Proportional to 2,993.88, 4,490.80 and 2,479.80

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Solution

The fourth proportional to 2,993.88, 4,490.80 and 2,479.80 is: 3,719.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,993.88 : 4,490.80 = 2,479.80 : x
  2. Step 2: Convert to fraction form
    2,993.88/4,490.80 = 2,479.80/x
  3. Step 3: Cross multiply
    2,993.88x = 4,490.80 × 2,479.80
  4. Step 4: Simplify right side
    2,993.88x = 11,136,285.84
  5. Step 5: Solve for x
    x = 11,136,285.84/2,993.88
  6. Step 6: Final answer
    x = 3,719.68

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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.