Home / 5,216.64-7,200.47-2,979.73

Finding the Fourth Proportional to 5,216.64, 7,200.47 and 2,979.73

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Solution

The fourth proportional to 5,216.64, 7,200.47 and 2,979.73 is: 4,112.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,216.64 : 7,200.47 = 2,979.73 : x
  2. Step 2: Convert to fraction form
    5,216.64/7,200.47 = 2,979.73/x
  3. Step 3: Cross multiply
    5,216.64x = 7,200.47 × 2,979.73
  4. Step 4: Simplify right side
    5,216.64x = 21,455,456.47
  5. Step 5: Solve for x
    x = 21,455,456.47/5,216.64
  6. Step 6: Final answer
    x = 4,112.89

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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.