Home / 5,269.84-7,272.40-2,879.86

Finding the Fourth Proportional to 5,269.84, 7,272.40 and 2,879.86

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Solution

The fourth proportional to 5,269.84, 7,272.40 and 2,879.86 is: 3,974.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,269.84 : 7,272.40 = 2,879.86 : x
  2. Step 2: Convert to fraction form
    5,269.84/7,272.40 = 2,879.86/x
  3. Step 3: Cross multiply
    5,269.84x = 7,272.40 × 2,879.86
  4. Step 4: Simplify right side
    5,269.84x = 20,943,443.10
  5. Step 5: Solve for x
    x = 20,943,443.10/5,269.84
  6. Step 6: Final answer
    x = 3,974.21

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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.