Home / 3,508.79-5,247.69-3,121.52

Finding the Fourth Proportional to 3,508.79, 5,247.69 and 3,121.52

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Solution

The fourth proportional to 3,508.79, 5,247.69 and 3,121.52 is: 4,668.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,508.79 : 5,247.69 = 3,121.52 : x
  2. Step 2: Convert to fraction form
    3,508.79/5,247.69 = 3,121.52/x
  3. Step 3: Cross multiply
    3,508.79x = 5,247.69 × 3,121.52
  4. Step 4: Simplify right side
    3,508.79x = 16,380,756.17
  5. Step 5: Solve for x
    x = 16,380,756.17/3,508.79
  6. Step 6: Final answer
    x = 4,668.49

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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.