Home / 3,853.97-5,313.51-3,145.08

Finding the Fourth Proportional to 3,853.97, 5,313.51 and 3,145.08

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Solution

The fourth proportional to 3,853.97, 5,313.51 and 3,145.08 is: 4,336.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,853.97 : 5,313.51 = 3,145.08 : x
  2. Step 2: Convert to fraction form
    3,853.97/5,313.51 = 3,145.08/x
  3. Step 3: Cross multiply
    3,853.97x = 5,313.51 × 3,145.08
  4. Step 4: Simplify right side
    3,853.97x = 16,711,414.03
  5. Step 5: Solve for x
    x = 16,711,414.03/3,853.97
  6. Step 6: Final answer
    x = 4,336.16

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Half scale
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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.