Home / 3,619.42-5,428.51-1,021.75

Finding the Fourth Proportional to 3,619.42, 5,428.51 and 1,021.75

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Solution

The fourth proportional to 3,619.42, 5,428.51 and 1,021.75 is: 1,532.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,619.42 : 5,428.51 = 1,021.75 : x
  2. Step 2: Convert to fraction form
    3,619.42/5,428.51 = 1,021.75/x
  3. Step 3: Cross multiply
    3,619.42x = 5,428.51 × 1,021.75
  4. Step 4: Simplify right side
    3,619.42x = 5,546,580.09
  5. Step 5: Solve for x
    x = 5,546,580.09/3,619.42
  6. Step 6: Final answer
    x = 1,532.45

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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.