Home / 2,025.76-3,038.96-639.04

Finding the Fourth Proportional to 2,025.76, 3,038.96 and 639.04

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Solution

The fourth proportional to 2,025.76, 3,038.96 and 639.04 is: 958.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,025.76 : 3,038.96 = 639.04 : x
  2. Step 2: Convert to fraction form
    2,025.76/3,038.96 = 639.04/x
  3. Step 3: Cross multiply
    2,025.76x = 3,038.96 × 639.04
  4. Step 4: Simplify right side
    2,025.76x = 1,942,017.00
  5. Step 5: Solve for x
    x = 1,942,017.00/2,025.76
  6. Step 6: Final answer
    x = 958.66

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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.