Home / 4,879.75-7,320.71-2,687.35

Finding the Fourth Proportional to 4,879.75, 7,320.71 and 2,687.35

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Solution

The fourth proportional to 4,879.75, 7,320.71 and 2,687.35 is: 4,031.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,879.75 : 7,320.71 = 2,687.35 : x
  2. Step 2: Convert to fraction form
    4,879.75/7,320.71 = 2,687.35/x
  3. Step 3: Cross multiply
    4,879.75x = 7,320.71 × 2,687.35
  4. Step 4: Simplify right side
    4,879.75x = 19,673,296.58
  5. Step 5: Solve for x
    x = 19,673,296.58/4,879.75
  6. Step 6: Final answer
    x = 4,031.62

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.