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Finding the Fourth Proportional to 2,201.76, 3,029.94 and 1,905.30

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Solution

The fourth proportional to 2,201.76, 3,029.94 and 1,905.30 is: 2,621.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,201.76 : 3,029.94 = 1,905.30 : x
  2. Step 2: Convert to fraction form
    2,201.76/3,029.94 = 1,905.30/x
  3. Step 3: Cross multiply
    2,201.76x = 3,029.94 × 1,905.30
  4. Step 4: Simplify right side
    2,201.76x = 5,772,944.68
  5. Step 5: Solve for x
    x = 5,772,944.68/2,201.76
  6. Step 6: Final answer
    x = 2,621.97

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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.