Home / 3,846.38-5,307.81-2,168.18

Finding the Fourth Proportional to 3,846.38, 5,307.81 and 2,168.18

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Solution

The fourth proportional to 3,846.38, 5,307.81 and 2,168.18 is: 2,991.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,846.38 : 5,307.81 = 2,168.18 : x
  2. Step 2: Convert to fraction form
    3,846.38/5,307.81 = 2,168.18/x
  3. Step 3: Cross multiply
    3,846.38x = 5,307.81 × 2,168.18
  4. Step 4: Simplify right side
    3,846.38x = 11,508,287.49
  5. Step 5: Solve for x
    x = 11,508,287.49/3,846.38
  6. Step 6: Final answer
    x = 2,991.98

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Half scale
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Double scale
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Similar ratio
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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.