Home / 2,020.68-3,026.70-1,288.44

Finding the Fourth Proportional to 2,020.68, 3,026.70 and 1,288.44

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Solution

The fourth proportional to 2,020.68, 3,026.70 and 1,288.44 is: 1,929.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,020.68 : 3,026.70 = 1,288.44 : x
  2. Step 2: Convert to fraction form
    2,020.68/3,026.70 = 1,288.44/x
  3. Step 3: Cross multiply
    2,020.68x = 3,026.70 × 1,288.44
  4. Step 4: Simplify right side
    2,020.68x = 3,899,721.35
  5. Step 5: Solve for x
    x = 3,899,721.35/2,020.68
  6. Step 6: Final answer
    x = 1,929.91

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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.