Home / 5,269.81-7,272.25-2,879.72

Finding the Fourth Proportional to 5,269.81, 7,272.25 and 2,879.72

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Solution

The fourth proportional to 5,269.81, 7,272.25 and 2,879.72 is: 3,973.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,269.81 : 7,272.25 = 2,879.72 : x
  2. Step 2: Convert to fraction form
    5,269.81/7,272.25 = 2,879.72/x
  3. Step 3: Cross multiply
    5,269.81x = 7,272.25 × 2,879.72
  4. Step 4: Simplify right side
    5,269.81x = 20,942,043.77
  5. Step 5: Solve for x
    x = 20,942,043.77/5,269.81
  6. Step 6: Final answer
    x = 3,973.97

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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.