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Finding the Fourth Proportional to 3,518.48, 5,279.49 and 1,327.22

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Solution

The fourth proportional to 3,518.48, 5,279.49 and 1,327.22 is: 1,991.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,518.48 : 5,279.49 = 1,327.22 : x
  2. Step 2: Convert to fraction form
    3,518.48/5,279.49 = 1,327.22/x
  3. Step 3: Cross multiply
    3,518.48x = 5,279.49 × 1,327.22
  4. Step 4: Simplify right side
    3,518.48x = 7,007,044.72
  5. Step 5: Solve for x
    x = 7,007,044.72/3,518.48
  6. Step 6: Final answer
    x = 1,991.50

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1.5x scale

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.