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Finding the Fourth Proportional to 3,279.99, 4,921.44 and 1,719.62

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Solution

The fourth proportional to 3,279.99, 4,921.44 and 1,719.62 is: 2,580.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,279.99 : 4,921.44 = 1,719.62 : x
  2. Step 2: Convert to fraction form
    3,279.99/4,921.44 = 1,719.62/x
  3. Step 3: Cross multiply
    3,279.99x = 4,921.44 × 1,719.62
  4. Step 4: Simplify right side
    3,279.99x = 8,463,012.51
  5. Step 5: Solve for x
    x = 8,463,012.51/3,279.99
  6. Step 6: Final answer
    x = 2,580.20

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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.