Home / 2,025.68-3,038.62-639.12

Finding the Fourth Proportional to 2,025.68, 3,038.62 and 639.12

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Solution

The fourth proportional to 2,025.68, 3,038.62 and 639.12 is: 958.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,025.68 : 3,038.62 = 639.12 : x
  2. Step 2: Convert to fraction form
    2,025.68/3,038.62 = 639.12/x
  3. Step 3: Cross multiply
    2,025.68x = 3,038.62 × 639.12
  4. Step 4: Simplify right side
    2,025.68x = 1,942,042.81
  5. Step 5: Solve for x
    x = 1,942,042.81/2,025.68
  6. Step 6: Final answer
    x = 958.71

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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.