Home / 3,801.72-5,246.22-2,123.10

Finding the Fourth Proportional to 3,801.72, 5,246.22 and 2,123.10

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Solution

The fourth proportional to 3,801.72, 5,246.22 and 2,123.10 is: 2,929.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,801.72 : 5,246.22 = 2,123.10 : x
  2. Step 2: Convert to fraction form
    3,801.72/5,246.22 = 2,123.10/x
  3. Step 3: Cross multiply
    3,801.72x = 5,246.22 × 2,123.10
  4. Step 4: Simplify right side
    3,801.72x = 11,138,249.68
  5. Step 5: Solve for x
    x = 11,138,249.68/3,801.72
  6. Step 6: Final answer
    x = 2,929.79

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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.