Home / 3,142.36-4,334.07-2,078.23

Finding the Fourth Proportional to 3,142.36, 4,334.07 and 2,078.23

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Solution

The fourth proportional to 3,142.36, 4,334.07 and 2,078.23 is: 2,866.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,142.36 : 4,334.07 = 2,078.23 : x
  2. Step 2: Convert to fraction form
    3,142.36/4,334.07 = 2,078.23/x
  3. Step 3: Cross multiply
    3,142.36x = 4,334.07 × 2,078.23
  4. Step 4: Simplify right side
    3,142.36x = 9,007,194.30
  5. Step 5: Solve for x
    x = 9,007,194.30/3,142.36
  6. Step 6: Final answer
    x = 2,866.38

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Half scale
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Double scale
Find fourth proportional to 3,143.36, 4,335.45 and 2,079.23
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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.