Home / 2,412.05-3,619.45-1,489.87

Finding the Fourth Proportional to 2,412.05, 3,619.45 and 1,489.87

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Solution

The fourth proportional to 2,412.05, 3,619.45 and 1,489.87 is: 2,235.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,412.05 : 3,619.45 = 1,489.87 : x
  2. Step 2: Convert to fraction form
    2,412.05/3,619.45 = 1,489.87/x
  3. Step 3: Cross multiply
    2,412.05x = 3,619.45 × 1,489.87
  4. Step 4: Simplify right side
    2,412.05x = 5,392,509.97
  5. Step 5: Solve for x
    x = 5,392,509.97/2,412.05
  6. Step 6: Final answer
    x = 2,235.65

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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.