Home / 3,161.20-4,364.79-2,042.80

Finding the Fourth Proportional to 3,161.20, 4,364.79 and 2,042.80

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Solution

The fourth proportional to 3,161.20, 4,364.79 and 2,042.80 is: 2,820.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,161.20 : 4,364.79 = 2,042.80 : x
  2. Step 2: Convert to fraction form
    3,161.20/4,364.79 = 2,042.80/x
  3. Step 3: Cross multiply
    3,161.20x = 4,364.79 × 2,042.80
  4. Step 4: Simplify right side
    3,161.20x = 8,916,393.01
  5. Step 5: Solve for x
    x = 8,916,393.01/3,161.20
  6. Step 6: Final answer
    x = 2,820.57

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1.5x scale

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.