Home / 5,216.49-7,198.55-3,121.77

Finding the Fourth Proportional to 5,216.49, 7,198.55 and 3,121.77

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Solution

The fourth proportional to 5,216.49, 7,198.55 and 3,121.77 is: 4,307.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,216.49 : 7,198.55 = 3,121.77 : x
  2. Step 2: Convert to fraction form
    5,216.49/7,198.55 = 3,121.77/x
  3. Step 3: Cross multiply
    5,216.49x = 7,198.55 × 3,121.77
  4. Step 4: Simplify right side
    5,216.49x = 22,472,201.82
  5. Step 5: Solve for x
    x = 22,472,201.82/5,216.49
  6. Step 6: Final answer
    x = 4,307.92

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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.