Home / 3,620.43-5,431.32-1,155.47

Finding the Fourth Proportional to 3,620.43, 5,431.32 and 1,155.47

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Solution

The fourth proportional to 3,620.43, 5,431.32 and 1,155.47 is: 1,733.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,620.43 : 5,431.32 = 1,155.47 : x
  2. Step 2: Convert to fraction form
    3,620.43/5,431.32 = 1,155.47/x
  3. Step 3: Cross multiply
    3,620.43x = 5,431.32 × 1,155.47
  4. Step 4: Simplify right side
    3,620.43x = 6,275,700.16
  5. Step 5: Solve for x
    x = 6,275,700.16/3,620.43
  6. Step 6: Final answer
    x = 1,733.41

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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.