Home / 3,619.80-5,431.23-1,154.82

Finding the Fourth Proportional to 3,619.80, 5,431.23 and 1,154.82

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Solution

The fourth proportional to 3,619.80, 5,431.23 and 1,154.82 is: 1,732.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,619.80 : 5,431.23 = 1,154.82 : x
  2. Step 2: Convert to fraction form
    3,619.80/5,431.23 = 1,154.82/x
  3. Step 3: Cross multiply
    3,619.80x = 5,431.23 × 1,154.82
  4. Step 4: Simplify right side
    3,619.80x = 6,272,093.03
  5. Step 5: Solve for x
    x = 6,272,093.03/3,619.80
  6. Step 6: Final answer
    x = 1,732.72

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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.