Home / 5,217.18-7,198.71-3,120.54

Finding the Fourth Proportional to 5,217.18, 7,198.71 and 3,120.54

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Solution

The fourth proportional to 5,217.18, 7,198.71 and 3,120.54 is: 4,305.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,217.18 : 7,198.71 = 3,120.54 : x
  2. Step 2: Convert to fraction form
    5,217.18/7,198.71 = 3,120.54/x
  3. Step 3: Cross multiply
    5,217.18x = 7,198.71 × 3,120.54
  4. Step 4: Simplify right side
    5,217.18x = 22,463,862.50
  5. Step 5: Solve for x
    x = 22,463,862.50/5,217.18
  6. Step 6: Final answer
    x = 4,305.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.