Home / 3,605.08-4,976.68-2,112.80

Finding the Fourth Proportional to 3,605.08, 4,976.68 and 2,112.80

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Solution

The fourth proportional to 3,605.08, 4,976.68 and 2,112.80 is: 2,916.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,605.08 : 4,976.68 = 2,112.80 : x
  2. Step 2: Convert to fraction form
    3,605.08/4,976.68 = 2,112.80/x
  3. Step 3: Cross multiply
    3,605.08x = 4,976.68 × 2,112.80
  4. Step 4: Simplify right side
    3,605.08x = 10,514,729.50
  5. Step 5: Solve for x
    x = 10,514,729.50/3,605.08
  6. Step 6: Final answer
    x = 2,916.64

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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.