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Finding the Fourth Proportional to 1,800.51, 2,481.30 and 1,201.92

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Solution

The fourth proportional to 1,800.51, 2,481.30 and 1,201.92 is: 1,656.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,800.51 : 2,481.30 = 1,201.92 : x
  2. Step 2: Convert to fraction form
    1,800.51/2,481.30 = 1,201.92/x
  3. Step 3: Cross multiply
    1,800.51x = 2,481.30 × 1,201.92
  4. Step 4: Simplify right side
    1,800.51x = 2,982,324.10
  5. Step 5: Solve for x
    x = 2,982,324.10/1,800.51
  6. Step 6: Final answer
    x = 1,656.38

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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.