Home / 2,026.15-3,039.21-639.59

Finding the Fourth Proportional to 2,026.15, 3,039.21 and 639.59

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Solution

The fourth proportional to 2,026.15, 3,039.21 and 639.59 is: 959.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,026.15 : 3,039.21 = 639.59 : x
  2. Step 2: Convert to fraction form
    2,026.15/3,039.21 = 639.59/x
  3. Step 3: Cross multiply
    2,026.15x = 3,039.21 × 639.59
  4. Step 4: Simplify right side
    2,026.15x = 1,943,833.13
  5. Step 5: Solve for x
    x = 1,943,833.13/2,026.15
  6. Step 6: Final answer
    x = 959.37

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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.