Home / 3,618.85-5,428.66-1,153.09

Finding the Fourth Proportional to 3,618.85, 5,428.66 and 1,153.09

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Solution

The fourth proportional to 3,618.85, 5,428.66 and 1,153.09 is: 1,729.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,618.85 : 5,428.66 = 1,153.09 : x
  2. Step 2: Convert to fraction form
    3,618.85/5,428.66 = 1,153.09/x
  3. Step 3: Cross multiply
    3,618.85x = 5,428.66 × 1,153.09
  4. Step 4: Simplify right side
    3,618.85x = 6,259,717.11
  5. Step 5: Solve for x
    x = 6,259,717.11/3,618.85
  6. Step 6: Final answer
    x = 1,729.75

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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.