Home / 3,619.56-5,431.14-1,429.86

Finding the Fourth Proportional to 3,619.56, 5,431.14 and 1,429.86

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Solution

The fourth proportional to 3,619.56, 5,431.14 and 1,429.86 is: 2,145.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,619.56 : 5,431.14 = 1,429.86 : x
  2. Step 2: Convert to fraction form
    3,619.56/5,431.14 = 1,429.86/x
  3. Step 3: Cross multiply
    3,619.56x = 5,431.14 × 1,429.86
  4. Step 4: Simplify right side
    3,619.56x = 7,765,769.84
  5. Step 5: Solve for x
    x = 7,765,769.84/3,619.56
  6. Step 6: Final answer
    x = 2,145.50

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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.