Home / 2,018.91-3,029.73-720.38

Finding the Fourth Proportional to 2,018.91, 3,029.73 and 720.38

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Solution

The fourth proportional to 2,018.91, 3,029.73 and 720.38 is: 1,081.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,018.91 : 3,029.73 = 720.38 : x
  2. Step 2: Convert to fraction form
    2,018.91/3,029.73 = 720.38/x
  3. Step 3: Cross multiply
    2,018.91x = 3,029.73 × 720.38
  4. Step 4: Simplify right side
    2,018.91x = 2,182,541.75
  5. Step 5: Solve for x
    x = 2,182,541.75/2,018.91
  6. Step 6: Final answer
    x = 1,081.05

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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.