Home / 3,080.19-4,251.14-1,961.62

Finding the Fourth Proportional to 3,080.19, 4,251.14 and 1,961.62

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Solution

The fourth proportional to 3,080.19, 4,251.14 and 1,961.62 is: 2,707.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,080.19 : 4,251.14 = 1,961.62 : x
  2. Step 2: Convert to fraction form
    3,080.19/4,251.14 = 1,961.62/x
  3. Step 3: Cross multiply
    3,080.19x = 4,251.14 × 1,961.62
  4. Step 4: Simplify right side
    3,080.19x = 8,339,115.52
  5. Step 5: Solve for x
    x = 8,339,115.52/3,080.19
  6. Step 6: Final answer
    x = 2,707.34

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Half scale
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Double scale
Find fourth proportional to 3,081.19, 4,252.52 and 1,962.62
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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.