Home / 2,018.46-3,029.49-1,288.65

Finding the Fourth Proportional to 2,018.46, 3,029.49 and 1,288.65

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Solution

The fourth proportional to 2,018.46, 3,029.49 and 1,288.65 is: 1,934.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,018.46 : 3,029.49 = 1,288.65 : x
  2. Step 2: Convert to fraction form
    2,018.46/3,029.49 = 1,288.65/x
  3. Step 3: Cross multiply
    2,018.46x = 3,029.49 × 1,288.65
  4. Step 4: Simplify right side
    2,018.46x = 3,903,952.29
  5. Step 5: Solve for x
    x = 3,903,952.29/2,018.46
  6. Step 6: Final answer
    x = 1,934.12

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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.