Home / 3,789.78-5,230.08-2,196.60

Finding the Fourth Proportional to 3,789.78, 5,230.08 and 2,196.60

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Solution

The fourth proportional to 3,789.78, 5,230.08 and 2,196.60 is: 3,031.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,789.78 : 5,230.08 = 2,196.60 : x
  2. Step 2: Convert to fraction form
    3,789.78/5,230.08 = 2,196.60/x
  3. Step 3: Cross multiply
    3,789.78x = 5,230.08 × 2,196.60
  4. Step 4: Simplify right side
    3,789.78x = 11,488,393.73
  5. Step 5: Solve for x
    x = 11,488,393.73/3,789.78
  6. Step 6: Final answer
    x = 3,031.41

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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.