Home / 3,996.78-5,512.69-2,668.17

Finding the Fourth Proportional to 3,996.78, 5,512.69 and 2,668.17

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Solution

The fourth proportional to 3,996.78, 5,512.69 and 2,668.17 is: 3,680.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,996.78 : 5,512.69 = 2,668.17 : x
  2. Step 2: Convert to fraction form
    3,996.78/5,512.69 = 2,668.17/x
  3. Step 3: Cross multiply
    3,996.78x = 5,512.69 × 2,668.17
  4. Step 4: Simplify right side
    3,996.78x = 14,708,818.09
  5. Step 5: Solve for x
    x = 14,708,818.09/3,996.78
  6. Step 6: Final answer
    x = 3,680.17

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Double 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.