Home / 3,081.47-4,252.43-1,684.22

Finding the Fourth Proportional to 3,081.47, 4,252.43 and 1,684.22

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Solution

The fourth proportional to 3,081.47, 4,252.43 and 1,684.22 is: 2,324.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,081.47 : 4,252.43 = 1,684.22 : x
  2. Step 2: Convert to fraction form
    3,081.47/4,252.43 = 1,684.22/x
  3. Step 3: Cross multiply
    3,081.47x = 4,252.43 × 1,684.22
  4. Step 4: Simplify right side
    3,081.47x = 7,161,997.97
  5. Step 5: Solve for x
    x = 7,161,997.97/3,081.47
  6. Step 6: Final answer
    x = 2,324.22

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Half scale
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Double scale
Find fourth proportional to 3,082.47, 4,253.81 and 1,685.22
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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.