Home / 3,530.78-4,872.68-2,018.81

Finding the Fourth Proportional to 3,530.78, 4,872.68 and 2,018.81

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Solution

The fourth proportional to 3,530.78, 4,872.68 and 2,018.81 is: 2,786.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,530.78 : 4,872.68 = 2,018.81 : x
  2. Step 2: Convert to fraction form
    3,530.78/4,872.68 = 2,018.81/x
  3. Step 3: Cross multiply
    3,530.78x = 4,872.68 × 2,018.81
  4. Step 4: Simplify right side
    3,530.78x = 9,837,015.11
  5. Step 5: Solve for x
    x = 9,837,015.11/3,530.78
  6. Step 6: Final answer
    x = 2,786.07

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.