Home / 3,620.57-5,431.54-1,429.32

Finding the Fourth Proportional to 3,620.57, 5,431.54 and 1,429.32

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Solution

The fourth proportional to 3,620.57, 5,431.54 and 1,429.32 is: 2,144.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,620.57 : 5,431.54 = 1,429.32 : x
  2. Step 2: Convert to fraction form
    3,620.57/5,431.54 = 1,429.32/x
  3. Step 3: Cross multiply
    3,620.57x = 5,431.54 × 1,429.32
  4. Step 4: Simplify right side
    3,620.57x = 7,763,405.18
  5. Step 5: Solve for x
    x = 7,763,405.18/3,620.57
  6. Step 6: Final answer
    x = 2,144.25

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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.