Home / 3,515.78-5,271.62-1,324.68

Finding the Fourth Proportional to 3,515.78, 5,271.62 and 1,324.68

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Solution

The fourth proportional to 3,515.78, 5,271.62 and 1,324.68 is: 1,986.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,515.78 : 5,271.62 = 1,324.68 : x
  2. Step 2: Convert to fraction form
    3,515.78/5,271.62 = 1,324.68/x
  3. Step 3: Cross multiply
    3,515.78x = 5,271.62 × 1,324.68
  4. Step 4: Simplify right side
    3,515.78x = 6,983,202.96
  5. Step 5: Solve for x
    x = 6,983,202.96/3,515.78
  6. Step 6: Final answer
    x = 1,986.25

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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.