Home / 5,216.19-7,198.94-2,978.39

Finding the Fourth Proportional to 5,216.19, 7,198.94 and 2,978.39

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Solution

The fourth proportional to 5,216.19, 7,198.94 and 2,978.39 is: 4,110.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,216.19 : 7,198.94 = 2,978.39 : x
  2. Step 2: Convert to fraction form
    5,216.19/7,198.94 = 2,978.39/x
  3. Step 3: Cross multiply
    5,216.19x = 7,198.94 × 2,978.39
  4. Step 4: Simplify right side
    5,216.19x = 21,441,214.91
  5. Step 5: Solve for x
    x = 21,441,214.91/5,216.19
  6. Step 6: Final answer
    x = 4,110.52

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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.