Home / 5,217.56-7,200.44-2,979.80

Finding the Fourth Proportional to 5,217.56, 7,200.44 and 2,979.80

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Solution

The fourth proportional to 5,217.56, 7,200.44 and 2,979.80 is: 4,112.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,217.56 : 7,200.44 = 2,979.80 : x
  2. Step 2: Convert to fraction form
    5,217.56/7,200.44 = 2,979.80/x
  3. Step 3: Cross multiply
    5,217.56x = 7,200.44 × 2,979.80
  4. Step 4: Simplify right side
    5,217.56x = 21,455,871.11
  5. Step 5: Solve for x
    x = 21,455,871.11/5,217.56
  6. Step 6: Final answer
    x = 4,112.24

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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.