Home / 2,841.21-3,920.24-1,661.73

Finding the Fourth Proportional to 2,841.21, 3,920.24 and 1,661.73

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Solution

The fourth proportional to 2,841.21, 3,920.24 and 1,661.73 is: 2,292.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,841.21 : 3,920.24 = 1,661.73 : x
  2. Step 2: Convert to fraction form
    2,841.21/3,920.24 = 1,661.73/x
  3. Step 3: Cross multiply
    2,841.21x = 3,920.24 × 1,661.73
  4. Step 4: Simplify right side
    2,841.21x = 6,514,372.11
  5. Step 5: Solve for x
    x = 6,514,372.11/2,841.21
  6. Step 6: Final answer
    x = 2,292.82

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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.