Home / 1,481.13-2,043.96-851.78

Finding the Fourth Proportional to 1,481.13, 2,043.96 and 851.78

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Solution

The fourth proportional to 1,481.13, 2,043.96 and 851.78 is: 1,175.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,481.13 : 2,043.96 = 851.78 : x
  2. Step 2: Convert to fraction form
    1,481.13/2,043.96 = 851.78/x
  3. Step 3: Cross multiply
    1,481.13x = 2,043.96 × 851.78
  4. Step 4: Simplify right side
    1,481.13x = 1,740,995.78
  5. Step 5: Solve for x
    x = 1,740,995.78/1,481.13
  6. Step 6: Final answer
    x = 1,175.45

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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.