Home / 2,780.94-4,165.92-2,161.26

Finding the Fourth Proportional to 2,780.94, 4,165.92 and 2,161.26

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Solution

The fourth proportional to 2,780.94, 4,165.92 and 2,161.26 is: 3,237.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,780.94 : 4,165.92 = 2,161.26 : x
  2. Step 2: Convert to fraction form
    2,780.94/4,165.92 = 2,161.26/x
  3. Step 3: Cross multiply
    2,780.94x = 4,165.92 × 2,161.26
  4. Step 4: Simplify right side
    2,780.94x = 9,003,636.26
  5. Step 5: Solve for x
    x = 9,003,636.26/2,780.94
  6. Step 6: Final answer
    x = 3,237.62

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1.5x scale

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.