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Finding the Fourth Proportional to 3,619.22, 5,424.64 and 1,667.32

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Solution

The fourth proportional to 3,619.22, 5,424.64 and 1,667.32 is: 2,499.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,619.22 : 5,424.64 = 1,667.32 : x
  2. Step 2: Convert to fraction form
    3,619.22/5,424.64 = 1,667.32/x
  3. Step 3: Cross multiply
    3,619.22x = 5,424.64 × 1,667.32
  4. Step 4: Simplify right side
    3,619.22x = 9,044,610.76
  5. Step 5: Solve for x
    x = 9,044,610.76/3,619.22
  6. Step 6: Final answer
    x = 2,499.05

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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.