Home / 3,620.98-5,429.43-1,155.22

Finding the Fourth Proportional to 3,620.98, 5,429.43 and 1,155.22

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Solution

The fourth proportional to 3,620.98, 5,429.43 and 1,155.22 is: 1,732.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,620.98 : 5,429.43 = 1,155.22 : x
  2. Step 2: Convert to fraction form
    3,620.98/5,429.43 = 1,155.22/x
  3. Step 3: Cross multiply
    3,620.98x = 5,429.43 × 1,155.22
  4. Step 4: Simplify right side
    3,620.98x = 6,272,186.12
  5. Step 5: Solve for x
    x = 6,272,186.12/3,620.98
  6. Step 6: Final answer
    x = 1,732.18

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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.