Home / 3,618.42-5,428.09-1,021.36

Finding the Fourth Proportional to 3,618.42, 5,428.09 and 1,021.36

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Solution

The fourth proportional to 3,618.42, 5,428.09 and 1,021.36 is: 1,532.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,618.42 : 5,428.09 = 1,021.36 : x
  2. Step 2: Convert to fraction form
    3,618.42/5,428.09 = 1,021.36/x
  3. Step 3: Cross multiply
    3,618.42x = 5,428.09 × 1,021.36
  4. Step 4: Simplify right side
    3,618.42x = 5,544,029.01
  5. Step 5: Solve for x
    x = 5,544,029.01/3,618.42
  6. Step 6: Final answer
    x = 1,532.17

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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.