Home / 3,624.78-5,438.91-1,981.26

Finding the Fourth Proportional to 3,624.78, 5,438.91 and 1,981.26

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Solution

The fourth proportional to 3,624.78, 5,438.91 and 1,981.26 is: 2,972.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,624.78 : 5,438.91 = 1,981.26 : x
  2. Step 2: Convert to fraction form
    3,624.78/5,438.91 = 1,981.26/x
  3. Step 3: Cross multiply
    3,624.78x = 5,438.91 × 1,981.26
  4. Step 4: Simplify right side
    3,624.78x = 10,775,902.26
  5. Step 5: Solve for x
    x = 10,775,902.26/3,624.78
  6. Step 6: Final answer
    x = 2,972.84

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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.