Home / 4,128.38-5,696.97-2,239.92

Finding the Fourth Proportional to 4,128.38, 5,696.97 and 2,239.92

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Solution

The fourth proportional to 4,128.38, 5,696.97 and 2,239.92 is: 3,090.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,128.38 : 5,696.97 = 2,239.92 : x
  2. Step 2: Convert to fraction form
    4,128.38/5,696.97 = 2,239.92/x
  3. Step 3: Cross multiply
    4,128.38x = 5,696.97 × 2,239.92
  4. Step 4: Simplify right side
    4,128.38x = 12,760,746.49
  5. Step 5: Solve for x
    x = 12,760,746.49/4,128.38
  6. Step 6: Final answer
    x = 3,090.98

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Half scale
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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.