Home / 3,785.92-5,221.44-2,665.60

Finding the Fourth Proportional to 3,785.92, 5,221.44 and 2,665.60

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Solution

The fourth proportional to 3,785.92, 5,221.44 and 2,665.60 is: 3,676.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,785.92 : 5,221.44 = 2,665.60 : x
  2. Step 2: Convert to fraction form
    3,785.92/5,221.44 = 2,665.60/x
  3. Step 3: Cross multiply
    3,785.92x = 5,221.44 × 2,665.60
  4. Step 4: Simplify right side
    3,785.92x = 13,918,270.46
  5. Step 5: Solve for x
    x = 13,918,270.46/3,785.92
  6. Step 6: Final answer
    x = 3,676.32

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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.