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Finding the Fourth Proportional to 2,392.99, 3,581.80 and 1,279.62

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Solution

The fourth proportional to 2,392.99, 3,581.80 and 1,279.62 is: 1,915.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,392.99 : 3,581.80 = 1,279.62 : x
  2. Step 2: Convert to fraction form
    2,392.99/3,581.80 = 1,279.62/x
  3. Step 3: Cross multiply
    2,392.99x = 3,581.80 × 1,279.62
  4. Step 4: Simplify right side
    2,392.99x = 4,583,339.72
  5. Step 5: Solve for x
    x = 4,583,339.72/2,392.99
  6. Step 6: Final answer
    x = 1,915.32

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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.