Home / 2,026.41-3,039.92-639.87

Finding the Fourth Proportional to 2,026.41, 3,039.92 and 639.87

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Solution

The fourth proportional to 2,026.41, 3,039.92 and 639.87 is: 959.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,026.41 : 3,039.92 = 639.87 : x
  2. Step 2: Convert to fraction form
    2,026.41/3,039.92 = 639.87/x
  3. Step 3: Cross multiply
    2,026.41x = 3,039.92 × 639.87
  4. Step 4: Simplify right side
    2,026.41x = 1,945,153.61
  5. Step 5: Solve for x
    x = 1,945,153.61/2,026.41
  6. Step 6: Final answer
    x = 959.90

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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.